NEC DSX PRODUCT DESCRIPTION User manual

IntraMail
For additional resources, visit our Technical Support site on the web at
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Components Features
Specifications
and Parts
Empowered by Innovation
Product Description
Manual
P/N 1093093
Rev 2, June 2006
Printed in U.S.A
.
01.00.00

This manual has been developed by NEC Unified Solutions, Inc. It is intended for the use of its customers and service
personnel, and should be read in its entirety before attempting to install or program the system. Any comments or suggestions
for improving this manual would be appreciated. Forward your remarks to:
NEC Unified Solutions, Inc.
4 Forest Parkway
Shelton, CT 06484
www.necunifiedsolutions.com
Nothing contained in this manual shall be deemed to be, and this manual does not constitute, a warranty of, or representation
with respect to, any of the equipment covered. This manual is subject to change without notice and NEC Unified Solutions,
Inc. has no obligation to provide any updates or corrections to this manual. Further, NEC Unified Solutions, Inc. also reserves
the right, without prior notice, to make changes in equipment design or components as it deems appropriate. No
representation is made that this manual is complete or accurate in all respects and NEC Unified Solutions, Inc. shall not be
liable for any errors or omissions. In no event shall NEC Unified Solutions, Inc. be liable for any incidental or consequential
damages in connection with the use of this manual. This document contains proprietary information that is protected by
copyright. All rights are reserved. No part of this document may be photocopied or reproduced without prior written consent
of NEC Unified Solutions, Inc.
©2006 by NEC Unified Solutions, Inc. All Rights Reserved.
Printed in U.S.A.

INNOVATIVE
DSX from NEC takes the lead with state-of-the-art innovations sure to make your business communications
more efficient, profitable, and enjoyable.
Innovation starts with the new sleek DSX telephones. All models feature the same thin, floating design, two
position angle adjustment for effortless viewing, and built in wall mounting. The 22-Button Display offers a
large 3-line-by-24 character display, four interactive soft keys, and a built in speakerphone. The 34-Button
Display is enhanced with a backlit display and illuminated dial pad (for improved low light viewing), as well
as additional feature keys. A 34-Button Display advanced model provides a built-in half-duplex speakerphone.
The 34-Button Super Display has all the features of the advanced 34-Button and additionally offers the user a
9-line-by-24-character display and 12 interactive soft keys. Rounding out the line, the DSX Cordless Tele-
phone provides mobility and flexibility for those who spend much of the workday away from their desk.
Complemented by 4 fully programmable Feature Keys, the DSX Cordless Telephone achieves a whole new
level of convenience and mobility.
Innovations don’t stop with the DSX telephones. Right out of the box the system has a two-port Automated
Attendant with no optional equipment required. The capability for full-featured IntraMail Voice Mail with
Automated Attendant is inherent in the system and only requires an IntraMail flash card to activate. Program
on-site from the telephone or from a PC connected to the system’s ethernet or USB port. PC remote pro-
gramming is available through the ethernet port or built-in modem.
AFFORDABLE
NEC designed DSX from the ground up with affordability in mind. Economy per port is maximized by high-
density circuitry. All DSX telephones have a speakerphone and display for increased functionality and total
lower station cost. Native support for ISDN PRI and T1 provides maximum connectivity for low initial
investment. Since DSX is simple to install and easy to use, the expenses of configuration, programming, and
post-installation training are minimized.
The cost-effective IntraMail provides sophisticated Voice Mail and Automated Attendant features previously
available only with expensive add-ons or costly external units. It is available in two configurations: 4 port/8
hour and 8 port/16 hour. The IntraMail Automated Attendant includes the call answering features you
demand such as dial access to extensions, unique day, night, and holiday answering (Flexible Answering
Schedules), the ability for two companies to share the same IntraMail (Multiple Company Greetings), and
the capability to dial employees by entering their names instead of extension numbers (Directory Dialing).
IntraMail Voice Mail is much more than simple messaging. Advanced IntraMail features allow you to auto-
matically place a return call to the message sender (Caller ID with Return Call), screen your incoming calls
(Call Screening), forward a message to a co-worker (Message Forward), and send a call to a co-worker’s
mailbox (Transfer to a Mailbox).

DSX is sized right, starting with the economical 40-port DSX-40, growing into the 80-port DSX-80, and
culminating in the 160-port DSX-160. To maintain the value of your investment, all the components of a
DSX-80 can be used in DSX-160 just by adding a DSX-160 cabinet. Even when growing from the DSX-40,
your investment in programming, telephones and other station equipment is retained.
RELIABLE
Over a decade of intense feature development ensures that the core DSX call processing features are mature,
efficient, and reliable – yet intuitive and easy to use. Combined with end-to-end Quality Assurance and state-
of-the-art circuit design (which achieves new standards for efficiency and economy), you are assured that
DSX will be your reliable business partner for years to come.
Innovative leadership and longevity are a rare combination among technology companies. Founded in 1899,
NEC has grown to a nearly $50 billion enterprise that produces 15,000 products in 126 manufacturing plants
worldwide. NEC pioneered the development of telephones and switching systems early in the 20th century,
and has maintained a leadership position in communications and networking ever since.

Table of Contents
DSX Product Description Manual Table of Contents ◆ i
Table of Contents
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DSX Telephones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
22-Button Display Telephone with Speakerphone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
34-Button Backlit Display Telephone with Speakerphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
34-Button Backlit Display Telephone with Full-Duplex Speakerphone . . . . . . . . . . . . . . . . . . 2
34-Button Backlit Super Display Telephone with Half-Duplex Speakerphone . . . . . . . . . . . . . 2
60-Button DSS Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Single Line Telephones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
DTH-1-1 Single Line Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
DTR-1-1 Single Line Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
DTR-1HM-1 Single Line Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
DSX Cordless Telephone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DSX Cordless Lite II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Headsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Corded Headsets for DSX Keysets and DTR/DTH SLTs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
NEC / Plantronics Headsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
GN Netcom Headsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Headsets for DSX Cordless Lite II Telephone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DESI Telephone Label System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DESI Labeling Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DESI Telephone Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DSX-80/160 Common Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DSX-80 4-Slot KSU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DSX-160 8-Slot KSU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DSX-80/160 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DSX-80/160 CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DSX-80/160 CPU Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DSX-80/160 Station Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
DSX-80/160 16 Port Digital Station (16ESIU) Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
DSX-80/160 16 Port Analog Station (16SLIU) Card with HV Message Waiting. . . . . . . . . . 13
DSX-80/160 8 Port Analog Station (8SLIU) Card with HV Message Waiting. . . . . . . . . . . . 14
DSX-80/160 Line Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DSX-80/160 T1/E1/PRI Line Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DSX-80/160 16 Port CO Line (16COIU) Card with Caller ID . . . . . . . . . . . . . . . . . . . . . . . . 15
DSX-80/160 8 Port CO Line (8COIU) Card with Caller ID . . . . . . . . . . . . . . . . . . . . . . . . . . 16
IntraMail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DSX IntraMail 8 x 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DSX IntraMail 4 x 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Miscellaneous Cards and Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
DSX Analog Door Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
DSX 2PGDAD Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DSX-80/160 System Load Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table of Contents
ii ◆ Table of Contents
DSX Product Description Manual
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
How To Use This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Account Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Optional (Unforced) Account Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Forced Account Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Verified Account Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Using Account Codes and Speed Dial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Using Account Codes with Last Number Redial and Save . . . . . . . . . . . . . . . . . . . . . . . . 22
Account Codes and Emergency Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Alphanumeric Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Attendant Call Queuing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Operator Call Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Attendant Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Auto Redial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Automatic Handsfree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Automatic Slot Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Background Music . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Barge In (Intrusion) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Battery Backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Call Coverage Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Call Forwarding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Call Forwarding Chaining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Call Forwarding Cancel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Call Forwarding Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Call Forwarding Toggle in a Personal Speed Dial Bin . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Call Forwarding Confirmation Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Call Forwarding Off Premises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Call Timer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Call Waiting / Camp-On. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Callback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Caller ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Single and Multiple Message Format Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Caller ID on the SMDR Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Caller ID Integration with Voice Mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Second Call Caller ID (Extension Level Call Waiting Caller ID) . . . . . . . . . . . . . . . . . . . 30
Third Party Caller ID Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Caller ID Display Separator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Caller ID to Single Line Telephones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Caller ID Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Central Office Calls, Answering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Answering Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Central Office Calls, Placing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Store and Forward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Check Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Class of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Conference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Cordless Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Delayed Ringing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Dial Number Preview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Dial Tone Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Direct Inward Dialing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
ANI/DNIS Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Table of Contents
DSX Product Description Manual Table of Contents ◆ iii
Direct Inward Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Night Mode Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Direct Line Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Direct Station Selection (DSS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Direct Station Selection (DSS) Console. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Default DSS Console Key Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Directed Call Pickup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Directory Dialing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Distinctive Ringing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
The Distinctive Ringing Hierarchy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Understanding Ring Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
When Multiple Calls Ring an Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Do Not Disturb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Do Not Disturb BLF for Hotline and Call Coverage Keys . . . . . . . . . . . . . . . . . . . . . . . . 41
Do Not Disturb Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Door Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Door Box Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Door Box Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Extended Ringing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Extension Hunting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Circular Hunting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Terminal Hunting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Uniform Call Distribution (UCD) Hunting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Extension Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Walking Class of Service and Extension Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Feature Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Flexible Numbering Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Forced Line Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Group Call Pickup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Group Listen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Group Ring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Handsfree and Handsfree Answerback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Handsfree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Handsfree Answerback and Forced Intercom Ringing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Headset Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Headset Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Off-Hook Signaling and Headsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
System (Regular) Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Exclusive Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Automatic Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Intercom Hold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Distinctive Flash Rate on Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Hold Recall Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Hotline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Hotline Automatic Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Interactive Soft Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Intercom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Handsfree Answerback and Forced Intercom Ringing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Key Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Language Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

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DSX Product Description Manual
Last Number Redial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Enhanced Last Number Redial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Line Group Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Line Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Line Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Answering Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Line Queuing / Line Callback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Line Queuing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Line Callback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Line Queuing Priority. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Loop Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Switched Loop Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Fixed Loop Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Answering Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Meet-Me Conference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Message Waiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Microphone Mute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Handsfree Reply Soft Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Monitor / Silent Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Music on Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Names for Extensions and Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Night Service / Night Ring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Night Service Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Off-Hook Signaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Off-Hook Signaling for Outside Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Off-Hook Signaling for Intercom Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Off-Hook Signaling for Hotline Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Paging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Internal Paging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
External Paging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Page Relay Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Outside Call Ringing Over External Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Intercom Ring Over External Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Door Chime Over External Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Background Music Over External Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Ring Over Page Volume Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Park. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Distinctive Flash Rate on Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Personal Park Orbit Recall Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
System Park Orbit Recall Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
PBX / Centrex Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
PBX/Centrex Access Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
PC Program (System Administrator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Prime Line Preference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Idle Prime Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Intercom Prime Line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Prime Line vs. Ringing Line Preference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Privacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Privacy Release Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Private Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Programmable Idle Menu Soft Keys (Super Display) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Pulse to Tone Conversion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

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DSX Product Description Manual Table of Contents ◆ v
Regional Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Removing Lines and Extensions from Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Reverse Voice Over . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Ringdown Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Ringing Line Preference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Prime Line vs. Ringing Line Preference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Save Number Dialed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Selectable Display Messaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Single Line Telephones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Message Waiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Speed Dial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
System Speed Dial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Personal Speed Dial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Unique Speed Dial Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Storing Line Routing in a Speed Dial Bin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Centrex Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Chaining Bins for Dialing Long Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Split (Alternate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Station Instruments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Ring/Message Lamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Station Message Detail Recording . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
System Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
System Programming Password Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
T1 Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
ANI/DNIS Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
FSK Caller ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Tandem Calls / Unsupervised Conference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Tie Lines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Time and Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Toll Restriction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
The Toll Restriction Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Distinctive Flash Rate on Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Transfer Recall Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Handsfree Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Hotline Automatic Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
User Programmable Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Voice Mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Call Forwarding to Voice Mail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Leaving a Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Transferring to Voice Mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Conversation Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Conversation Record Key for a Co-worker’s Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Personal Answering Machine Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Voice Mail Overflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Message Center Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Interactive Soft Key Shows New Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Voice Over . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Volume and Contrast Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Volume Control Presets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Display Brightness and Contrast Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Display Brightness and Contrast Control Presets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

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vi ◆ Table of Contents
DSX Product Description Manual
Walking Class of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Walking Class of Service and Extension Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
IntraMail Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
How To Use This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Start-Up (Default) Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
IntraMail Feature Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Announcement Mailbox. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Announcement Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Answer Schedule Override. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Answer Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
The Default Mailbox and Routing Hierarchy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Answering Machine Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Auto Attendant Do Not Disturb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Auto Erase or Save. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Handling Partially Reviewed Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Auto Time Stamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Automated Attendant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Automated Attendant, Built-In. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Automated Attendant Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Automatic Routing for Rotrary Dial Callers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Automatic Routing for Rotrary Dial Callers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Call Forward to a Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Call Forwarding a Subscriber’s Direct Inward Line to their Mailbox . . . . . . . . . . . . . . . 101
Call Routing Mailbox. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Call Screening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Call Screening and Group Mailboxes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Automatic Call Screening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Caller ID and Voice Mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Calling the Automated Attendant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Centrex Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Conversation Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Conversation Record Key for a Co-worker’s Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Dial Action Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Directory Dialing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Directory Dialing Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Erasing All Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Exiting a Mailbox. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Extension Hunting to Voice Mail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
External Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Fax Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Flexible Answering Schedules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Flexible Call Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Flexible Mailbox Numbering Plan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Forced Unscreened Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Getting Recorded Help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Go to a Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Greeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Multiple Greetings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Remote Greetings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Group Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Ring Group Mailbox. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Table of Contents
DSX Product Description Manual Table of Contents ◆ vii
UCD Group Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Understanding Group Mailbox Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Guest Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Hang Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Instruction Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Leaving a Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Additional Options While Leaving a Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Listening to Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Handling Partially Reviewed Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Telephone Display while Listening to a Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Log Onto Voice Mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Local (On-site) Logon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Remote Log On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Mailbox Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Mailbox Options Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Mailbox Security Code Delete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Make Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Message Count Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Message Delete. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Message Forward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Message Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Message Listen Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Message Notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
How Message Notification Works to Normal Telephone Numbers. . . . . . . . . . . . . . . . . 120
How Message Notification Works to Digital Pager Numbers . . . . . . . . . . . . . . . . . . . . . 120
Message On Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Message Playback Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Message Reply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Message Retention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Message Retention Guard Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Message Storage Limit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Message Waiting Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Multiple Company Greetings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Next Call Routing Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Subscriber Mailbox Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Logging Onto a Subscriber Mailbox while Listening to the Greeting . . . . . . . . . . . . . . . 124
Programming Voice Mail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Quick Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Record and Send a Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Recording Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Remote Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Routing Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Screened Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Screened vs. Unscreened Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Screened Transfer and Inactive Mailboxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Security Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Single Digit Dialing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Subscriber Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
System Administrator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
System Administrator Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
System Re-initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Table of Contents
viii ◆ Table of Contents
DSX Product Description Manual
Time and Date with Voice Mail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Time and Date Stamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Time and Date Stamp with Caller ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Transfer to a Mailbox. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Transfer Message Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Transfer to a UCD Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Undefined Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Unscreened Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Screened vs. Unscreened Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Unscreened Transfer and Inactive Mailboxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Voice Mail Overflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Voice Prompting Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Volume Control with Voice Mail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Specifications and Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

DSX Telephones
DSX Product Description Components ◆ 1
Components
Components
DSX Telephones
DSX Telephones
22-Button Display Telephone with Speakerphone
The 22-Button Display Telephone features a large 3 line-by-24 character alphanumeric display with 4 Interac-
tive Soft Keys for intuitive feature access. It also provides 10 Personal Speed Dial bin keys, 12 programmable
Feature Keys and 12 fixed function keys for streamlined operation. Additionally, this telephone offers a headset
jack and built-in speakerphone. Unique features include dual LEDs, a Ring/Message Lamp (to show ringing,
Caller ID, and voice mail messages), built-in wall mounting, and an innovative two position angle adjustment.
34-Button Backlit Display Telephone with Speakerphone
The 34-Button Display Telephone features a large 3 line-by-24 character backlit alphanumeric display with
4 Interactive Soft Keys for intuitive feature access. It also provides 10 Personal Speed Dial bin keys, 24 pro-
grammable Feature Keys and 12 fixed function keys for streamlined operation. Additionally, this telephone
offers a backlit keypad, a headset jack, and built-in speakerphone. Unique features include dual LEDs, a
Ring/Message Lamp (to show ringing, Caller ID, and voice mail messages), built-in wall mounting, and an
innovative two position angle adjustment.
At a Glance
P/Ns 1090020 (Black) and 1090025 (White)
Display: 3 line x 24 character Speakerphone: Built-in, half-duplex
Soft Keys: 4 Wall Mount: Built-in
Feature Keys: 12 Angle Adjustment: 2 position built-in
Fixed Function Keys: 12 Backlit: No
Speed Dial Bin Keys: 10 Dual LEDs: Yes
Headset jack: RJ-10 built-in
At a Glance
P/Ns 1090021 (Black) and 1090026 (White)
Display: 3 line x 24 character Speakerphone: Built-in, half-duplex
Soft Keys: 4 Wall Mount: Built-in
Feature Keys: 24 Angle Adjustment: 2 position built-in
Fixed Function Keys: 12 Backlit:Yes
Speed Dial Bin Keys: 10 Dual LEDs: Yes
Headset jack: RJ-10 built-in

DSX Telephones
2 ◆ Components
DSX Product Description
34-Button Backlit Display Telephone with Full-Duplex Speakerphone
This feature-rich 34-Button Display Telephone features a large 3 line-by-24 character backlit alphanumeric
display with 4 Interactive Soft Keys for intuitive feature access. It also provides 10 Personal Speed Dial bin
keys, 24 programmable Feature Keys and 12 fixed function keys for streamlined operation. Additionally, this
telephone offers a built-in full duplex speakerphone (with no external speaker or microphone required), a
backlit keypad, and a headset jack. Unique features include dual LEDs, a Ring/Message Lamp (to show
ringing, Caller ID, and voice mail messages), built-in wall mounting, and an innovative two position angle
adjustment.
34-Button Backlit Super Display Telephone with Half-Duplex Speakerphone
The Super Display Telephone is the system’s most sophisticated telephone instrument. It features a large 9
line-by-24 character backlit alphanumeric display with 12 Interactive Soft Keys for intuitive feature access.
It also provides 10 Personal Speed Dial bin keys, 24 programmable Feature Keys and 12 fixed function keys
for streamlined operation. Additionally, this telephone offers a built-in full duplex speakerphone (with no
external speaker or microphone required), a backlit keypad, and a headset jack. Unique features include dual
LEDs, a Ring/Message Lamp (to show ringing, Caller ID, and voice mail messages), built-in wall mounting,
and an innovative two position angle adjustment.
60-Button DSS Console
The 60-Button DSS Console provides a display keyset with a 60-button Busy Lamp Field (BLF) and one-
button access to extensions, trunks, and selected system features. Enhanced by Answer, Release, and
Transfer fixed function keys, the 60-Button DSS Console is a great time saver for users that do a lot of call
processing (such as operators or dispatchers). By default, the DSS Console is set up with Hotline keys to
extensions and 14 feature keys for quick access to Page, Park and the system Night Mode
Note: DSX80/160 supports DS1000/2000 telephones if the system has a DSTU Card (P/N 80021A) installed.
At a Glance
P/Ns 1090022 (Black) and 1090027 (White)
Display: 3 line x 24 character Speakerphone: Built-in, full-duplex
Soft Keys: 4 Wall Mount: Built-in
Feature Keys: 24 Angle Adjustment: 2 position built-in
Fixed Function Keys: 12 Backlit:Yes
Speed Dial Bin Keys: 10 Dual LEDs: Yes
Headset jack: RJ-10 built-in
At a Glance
P/Ns 1090030 (Black) and 1090031 (White)
Display: 9 line x 24 character Speakerphone: Built-in, half-duplex
Soft Keys: 12 Wall Mount: Built-in
Feature Keys: 24 Angle Adjustment: 2 position built-in
Fixed Function Keys: 12 Backlit:Yes
Speed Dial Bin Keys: 10 Dual LEDs: Yes
Headset jack: RJ-10 built-in
At a Glance
P/Ns 1090024 (Black) and 1090029 (White)
Feature Keys: 60 Wall Mount: Built-in
Fixed Function Keys: 3 Angle Adjustment: 2 position built-in
Dual LEDs: No

Single Line Telephones
DSX Product Description Components ◆ 3
Components
Single Line Telephones
DTH-1-1 Single Line Telephone
The DTH-1-1 is a cost-effective analog single line telephone that offers 5 fixed feature keys, 4 Speed Dial
bin keys and Message Waiting. The built-in Message Waiting lamp will flash for incoming calls or when the
user has a message. To simplify working in groups, The DTH-1-1 provides 3 selectable ring tones.
DTR-1-1 Single Line Telephone
The DTR-1-1 is a stylish yet rugged analog single line telephone with 5 fixed feature keys and Message
Waiting. Similar to the DTH-1-1, the DTR-1-1 has a built in Message Waiting lamp that will flash for incom-
ing calls or when the user has a message. The DTR-1-1 offers programmable ring pitch and volume. Built-in
wall mounting and a bridged data jack for connecting a modem or answering machine are standard.
DTR-1HM-1 Single Line Telephone
The DTR-1HM-1 provides all the features of the DTR-1-1 in addition to two additional fixed function keys
(for Hold and Speaker/Monitor) and 8 Speed Dial bin keys. For convenient on-hook dialing and call monitor,
the DTR-1HM-1 also offers Handsfree Monitor.
At a Glance
P/N 780034 (Black)
Fixed Function Keys: 5 Message Waiting: Yes
Speed Dial Bin Keys: 4 Ring/Message Waiting Lamp: Yes
Selectable Ring Tones: Yes Wall Mount: Built-in
At a Glance
P/Ns 780020 (Black) and 780021 (White)
Fixed Function Keys: 5 Message Waiting: Yes
Speed Dial Bin Keys: None Ring/Message Waiting Lamp: No
Selectable Ring Tones: Yes Wall Mount: Built-in
Handsfree Monitor: No
At a Glance
P/Ns 780025 (Black) and 780026 (White)
Fixed Function Keys: 7 Message Waiting: Yes
Speed Dial Bin Keys: 8 Ring/Message Waiting Lamp: Yes
Selectable Ring Tones: Yes Wall Mount: Built-in
Handsfree Monitor: Yes

DSX Cordless Telephone
4 ◆ Components
DSX Product Description
DSX Cordless Telephone
DSX Cordless Lite II
The DSX Cordless Lite II Telephone (P/N 730087) is a 900 Mhz digital narrow band FM cordless telephone
that provides mobility, flexibility and convenience for those who spend much of the workday away from
their desk. Fully integrated with the DSX system, the DSX Cordless Lite II Telephone offers many standard
features such as Call Forwarding, Call Coverage, Hotline, and Voice Mail. Complemented by 4 fully pro-
grammable function keys (with LEDs), the DSX Cordless Lite II Telephone achieves a whole new level of
convenience and mobility. An easy-to-read 16-character by 2-line LCD display (with four status icons), vol-
ume controls, a rechargeable Nickel Metal Hydride Battery Pack, and a handy belt clip round out the elegant
and affordable DSX Cordless Lite II Telephone.
The Cordless II Lite Telephone includes the following:
At a Glance
P/N 730087
Display: 2 line x 16 character Transmission: 900 MHz Narrow Band FM
Status Icons: 4 Range: 350 feet (site dependent)
Feature Keys: 4 Max Units Per Site: 30 (12 in close proximity)
Fixed Function Keys: 8 Battery Life: Up to 7 hours talk time
Channels: 30
• Base Unit
• Base Unit AC Adaptor (P/N 630618)
• Base Wall Mount Bracket (P/N 730608)
• Base Line Cord
• Handset
• Handset Charger (P/N 730632)
• Handset Charger AC Adaptor (P/N 730619)
• Handset Charger Wall Mount Bracket (P/N
730633)
• Handset Battery (P/N 730631)
• Belt Clip (P/N 730634)

Headsets
DSX Product Description Components ◆ 5
Components
Headsets
Corded Headsets for DSX Keysets and DTR/DTH SLTs
The following corded headsets are compatible with DSX keysets and the DTR/DTH single line telephones.
Check with your supplier for their latest offerings.
NEC / Plantronics Headsets
NEC / Plantronics Amplified Headsets
NEC P/N Description Style Microphone Type Plantronics Model
Number
- Polaris Starset In-the-Ear Voice Tube P31
Noise Canceling P31N
750631 Polaris Mirage On-the-Ear Voice Tube P41
- Noise Canceling P41N
750632 Polaris Supra Monaural Over-the-Head Voice Tube P51
750636 Noise Canceling P51N
-Polaris Supra Binaural Over-the-Head Voice Tube P61
750633 Noise Canceling P61N
750630 Polaris TriStar In-the-Ear Voice Tube P81
- Noise Canceling P81N
750634 Polaris Encore Monaural Over-the-Head Voice Tube P91
- Noise Canceling P91N
- Polaris Encore Binaural Over-the-Head Voice Tube P101
760635 Noise Canceling P101N
- DuoSet Convertible Over-the-Head,
On-the-Ear
Voice Tube P141
Noise Canceling P141N
- DuoPro On-the-Ear Voice Tube P151
Noise Canceling P151N
- DuoPro Over-the-Head Voice Tube P161
Noise Canceling P161N
- DuoPro Convertible Over-the-Head, Voice Tube P171
- DuoPro Convertible Over-the-Head, Noise Canceling P171N
- DuoPro Behind-the-Head Voice Tube P181
- DuoPro Behind-the-Head Noise Canceling P181N
750643 Polaris/SupraPlus Monaural Over-the-Head Voice Tube P251
750644 Polaris/SupraPlus NC Monaural Noise Canceling P251N
- Polaris/SupraPlus NC Binaural Over-the-Head Voice Tube P261
750645 Polaris/SupraPlus NC Binaural Noise Canceling P261N
- SupraPlus SL Monaural Over-the-Head Voice Tube P351
Noise Canceling P351N
- SupraPlus SL Binaural Over-the-Head Voice Tube P361
Noise Canceling P361N

Headsets
6 ◆ Components
DSX Product Description
NEC / Plantronics Non-Amplified Headsets
1
NEC P/N Description Style Microphone Type Plantronics Model
Number
- StarSet In-the-Ear Voice Tube H31
Noise Canceling H31N
- Mirage On-the-Ear Voice Tube H41
Noise Canceling H41N
- Supra Monaural Over-the-Head Voice Tube H51
Noise Canceling H51N
- Supra Binaural Over-the-Head Voice Tube H61
Noise Canceling H61N
- TriStar In-the-Ear Voice Tube H81
Noise Canceling H81N
- Encore Monaural Over-the-Head Voice Tube H91
Noise Canceling H91N
- Encore Binaural Over-the-Head Voice Tube H101
Noise Canceling H101N
- Freehand Monaural In-the-Ear Voice Tube H131
Noise Canceling H131N
- DuoSet Convertible Over-the-Head,
On-the-Ear
Voice Tube H141
Noise Canceling H141N
- DuoPro On-the-Ear Voice Tube H151
H151N
- DuoPro Over-the-Head Voice Tube H161
Noise Canceling H161N
- DuoPro Convertible Over-the-Head,
On-the-Ear
Voice Tube H171
Noise Canceling H171N
- DuoPro Behind-the-Head Voice Tube H181
Noise Canceling H181N
- SupraPlus Monaural Over-the-Head Voice Tube H251
Noise Canceling H251N
- SupraPlus Binaural Over-the-Head Voice Tube H261
Noise Canceling H261N
- SupraPlus SL Monaural Over-the-Head Voice Tube H351
Noise Canceling H351N
- SuproPlus SL Binaural Over-the-Head Voice Tube H361
Noise Canceling H361N
1
Requires Vista M12 Amplifier and Handset/Headset Switch

Headsets
DSX Product Description Components ◆ 7
Components
GN Netcom Headsets
GN Netcom Non-Amplified Headsets
1
Model Number Description Microphone Type Style
GN 2110 STD01 2100 Sound Tube Monaural Sound-Tube Over-the-Head
GN 2120 NCD01 2100 Flex Monaural Noise-Canceling Over-the-Head
GN 2115 STD01 2100 SoundTube Binaural Sound-Tube Over-the-Head
GN 2125 NCD01 2100 Flex Binaural Noise-Canceling Over-the-Head
GN 2117 STD01 2100 SoundTube Monaural Sound-Tube On-the-Ear
GN 2127 NCD01 2100 Flex Monaural Noise-Canceling On-the-Ear
GN 2110 ST 2100 SoundTube Monaural Sound-Tube Over-the-Head
GN 2120 NC 2100 Flex Monaural Noise-Canceling Over-the-Head
GN 2115 ST 2100 SoundTube Binaural Sound-Tube Over-the-Head
GN 2125 NC 2100 Flex Binaural Noise-Canceling Over-the-Head
GN 2127 ST 2100 SoundTube Monaural Sound-Tube On-the-Ear
GN 2127 NC 2100 Flex Monaural Noise-Canceling On-the-Ear
405-SF Surefit Monaural Voice-Tube 3-Way Convertible:
Over-the-Head, Ear-
hook, Earloops
405-FLEX-SF Surefit Monaural Noise-Canceling
405-UNC-SF Surefit Monaural Noise-canceling
ADP-I ADDvantage Plus Monaural Noise-Canceling Over-the-Head
ADP-II ADDvantage Plus Binaural Noise-Canceling Over-the-Head
GN 2200 2200 Omega Monaural Noise-Canceling Over-the-Head
GN 2225 2200 Omega Binaural Noise-Canceling Over-the-Head
OG-I Orator-G Monaural Noise-Canceling Over-the-Head
OG-II Orator-G Binaural Noise-Canceling Over-the-Head
Contour LX-G Contour LX-G Monaural Noise-Canceling On-the-Ear
Stratus Ultra-G Stratus Ultra-G Monaural Noise-Canceling On-the-Ear
805-Flex 805-Flex Binaural Noise-Canceling Under-the-Chin or
Behind-the-Neck
1
Requires GN8000 MPA Amplifier and Headset Switch.

Headsets
8 ◆Components DSX Product Description
Headsets for DSX Cordless Lite II Telephone
The following headsets are available for the DSX Cordless Lite II Telephone:
• M175 Headband Style (P/N 750637)
• MX150 Earloop Style (P/N 750642)
At a Glance
P/N 750637 (M175) P/N 750642 (MX150)