Nortel M5208 Meridian User manual

297-2011-213
DMS-100 Family
M5208 Meridian Business Set
Description, Installation, Operation, and
Maintenance Manual
Release 02.01 Standard February 1999

DMS-100 Family
M5208 Meridian Business Set
Description, Installation, Operation, and
Maintenance Manual
NTP: 297-2011-213
Document status: Standard
Version: 02.01
Date: February 1999
© 1999 Northern Telecom
Printed in Canada
NORTHERN TELECOM CONFIDENTIAL: The information contained in this document is the property of Northern
Telecom. Except as specifically authorized in writing by Northern Telecom, the holder of this document shall keep the
information contained herein confidential and shall protect same in whole or in part from disclosure and dissemination to third
parties and use same for evaluation, operation, and maintenance purposes only.
The following are trademarks of Northern Telecom: Nortel, the Nortel globemark, DMS-100, Meridian.

iii
Publication history
297–2011–213 02.01 Standard February 1999
October 1996
Release 01.01. Standard version for NA004 and up.
February 1999
Release 02.01. Standard version changed from NA004 and up to CCM04 and
up.

iv Publication history
297–2011–213 02.01 Standard February 1999

v
Contents
297–2011–213 02.01 Standard February 1999
Publication history iii
Chapter 1: Introduction 1-1
General description 1-1
Physical characteristics 1-2
Other documentation 1-2
Chapter 2: Specifications 2-1
Environmental and safety considerations 2-1
Temperature 2-1
Relative humidity 2-1
Electromagnetic interference 2-1
Atmospheric pollution 2-1
Vibration 2-2
Shock 2-2
Line engineering 2-2
Chapter 3: Operations and features 3-1
Basic operations 3-1
Peripheral equipment 3-1
Acoustics 3-1
Power 3-1
Alphanumeric display 3-2
Description of features 3-3
Basic features 3-5
Additional features 3-5
Features operation 3-6
Available features 3-7
Local tones 3-7
Switch generated tone characteristics 3-8
Chapter 4: Installation 4-1
Installing the M5208 4-1
Wall mounting the M5208 4-4

vi Contents
297–2011–213 02.01 Standard February 1999
Chapter 5: Verification procedures 5-1
Verification test routines 5-1
Maintenance 5-1
Loop check 5-1
Polarity check 5-2
Station Ringer test 5-3
Chapter 6: Replacement parts 6-1
Figures
Figure 3-1 M5208 keys and other components 3-2
Figure 4-1 M5208 bottom view 4-2
Figure 4-2 M5208 wall mounting locations 4-4
Figure 4-3 M5208 base attachment 4-5
Figure 4-4 Handset retainer installation 4-6
Figure 4-5 Final wall position 4-6
Figure 5-1 Feature/line key and LCD assignments 5-6
Tables
Table 3-1 Summary of M5208 keys and indicators 3-4
Table 3-2 Switch generated tones 3-8
Table 6-1 Ordering information 6-1

1-1
Chapter 1
Introduction
297–2011–213 02.01 Standard February 1999
General description
The M5208 Meridian Business Set is designed for direct connection (through
a non-loaded subscriber loop pair) to the Northern Telecom DMS–10, DMS–
100, DMS–250, or Meridian SL–100 Digital Switching systems.
The M5208 is loop powered and works with a maximum loop length of
4,572 m (15,000 ft) of 26 AWG standard twisted pair telephone wires,
subject to Line Engineering Rules, NTP 297–2011–180.
The service provided by the M5208 substitutes low-level signals over a half-
duplex, above-voice band (8 kHz) signalling channel for the traditional loop
signalling (dial pulse) or inband tone signalling (DTMF tones) on a
conventional subscriber loop. In addition to signalling and supervision,
messages on the above-voice band signalling channel include signals for
implementing the many special features available on the M5208, as well as
display characters.
The M5208 offers a choice of selected key and system features—it has 3
fixed keys, a dial pad consisting of 12 fixed keys, 8 programmable feature
and/or directory number keys with LCD indicators, and is equipped with a
speaker for alerting tones, on-hook dialing and intercom.
The alphanumeric display module is mounted at the rear top edge of the
telephone and is hinged so that the viewing angle can be adjusted physically
to reduce glare and maximize the contrast. The maximum display capacity
of the display screen is 2 rows of 24 characters each.

1-2 Introduction
297–2011–213 02.01 Standard February 1999
Physical characteristics
Figure 3-1 shows the main components of the M5208. The set comes in
three different colours:
• Chameleon-grey (Engineering code NT4X41AA)
• BTS light-grey (Engineering code NT4X41BA)
• Black (Engineering code NT4X41CA)
The Mean Time Between Failure (MTBF) for the M5208 is at least 100
years.
Other documentation
Other information pertaining to Meridian Business Sets can be found in the
following documents:
297–2001–100 Integrated Business Network (IBN) —Description
297–1001–114 Operational Measurements (OM)
297–1001–250 Testing and Acceptance for Initial Installation
297–1001–310 Table Editors User Guide
297–1001–518 Operational Measurements—Man-Machine Interface
297–2011–180 DMS-100 Business Set—Line Engineering Rules
P0749049 Meridian Business Set User Guide (English/French)
P0800728 Meridian Business Set User Guide (Spanish)

2-1
Chapter 2
Specifications
297–2011–213 02.01 Standard February 1999
The following specifications govern the performance of the M5208 Business
Set and the environmental conditions under which this performance is
achieved.
Environmental and safety considerations
The M5208 meets the Canadian and U.S. mandatory interconnect
requirements for Telephone Equipment, CSA, DOC, UL, FCC (part 15 &
part 68).
Temperature
In the Operating State, the M5208 temperature range is 0°C to 50°C
(32°F to 122°F).
In the Non-Operating State, the M5208 temperature range is -20°C to 70°C
(-6°F to 158°F).
Relative humidity
20% to 95% (non-condensing). At temperatures above 34°C (93°F), relative
humidity is limited to 52mbar of water vapour pressure.
Electromagnetic interference
The radiated and conducted electromagnetic interference meets the
requirements of Subpart J of Part 15 of the FCC rules for class B computing
devices.
Atmospheric pollution
The M5208 is designed to withstand normal atmospheric conditions
throughout its life and during shipment and storage as defined in the
International Electromechanical Commission (IEC) document 50 (salt, mist,
atmospheric dust, sulfur dioxide, and hydrogen sulfide exposure).

2-2 Specifications
297–2011–213 02.01 Standard February 1999
Vibration
The M5208 is designed to work to specifications after being subjected to the
following vibrations in each of three orthogonal directions for 90 minutes:
• Vibration frequency of 5 Hz to 500 Hz
• Maximum half displacement 0.35mm (0.014 in)
• Maximum acceleration 1.5m/s/s.
Shock When packaged, the M5208 is designed to withstand normal handling during
shipment.
When unpacked, the M5208 is designed to withstand accidental dropping
during normal use, without sustaining damage, as specified below:
• Telephone: when dropped on any face or corner from a height not
exceeding 0.75m (30in)
• Handset: when dropped from a height not exceeding 1.5m (60in)
Line engineering
The M5208 operates to its full potential through twisted pair wiring on
transmission lines selected by the rules provided in NTP 297–2011–180.