Paradyne COMSPHERE 3830 User manual

COMSPHERE
3800
S ERIE S M ODEMS
MODE
L 3 830
USER’S G UIDE
Document No. 3830-A2-GB91-20

COMSPHERE 3800 Series Modems – Model 3830
ANovember 1996 3830-A2-GB91-20
COMSPHERE
3800 Series Modems
Model 3830
User’s Guide
3830-A2-GB91-20
3rd Edition (November 1996)
Changes and enhancements to the product and to the information
herein will be documented and issued as a new release or a limited
revision of this manual.
For the Model 3830 standalone modem, the Universal Service Order
Code (USOC) for Permissive mode is RJ1 1C and for Programmable
mode is RJ41S or RJ45S. The Canadian equivalent to the USOC is
CA11 for RJ1 1C, and CA41A and CA45A for RJ41S and RJ45S,
respectively.
FCC Registration number: (See label on modem)
Ringer Equivalence number (REN): 0.8B
Canadian Certification number: (See label on modem)
Canadian DOC Load number: 7
COPYRIGHT E1996 Paradyne Corporation. All rights reserved.
This publication is protected by federal copyright law . No part of this publication may be copied or distributed,
transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in
any
form or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties
without the express written permission of Paradyne Corporation, 8545 126th Avenue North, P.O. Box 2826,
Largo,
Florida 33779-2826.
Paradyne Corporation makes no representation or warranties with respect to the contents hereof and
specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. Further,
Paradyne
Corporation reserves the right to revise this publication and to make changes from time to time in
the contents hereof without obligation of Paradyne Corporation to notify any person of such revision or
changes.
Printed on recycled paper

Trademarks
B3830-A2-GB91-20 November 1996
Warranty, Sales, and Service Information
Contact your sales or service representative directly for any help
needed. For additional information concerning warranty, sales, service,
repair, installation, documentation or training, use one of the following
methods:
•Via the Internet: Visit the Paradyne World Wide Web site at
http://www.paradyne.com
•Via Telephone: Call our automated call system to receive
current information via fax or to speak with a company
representative.
– Within the U.S.A., call 1-800-870-2221
– International, call 727-530-2340
Trademarks
All products and services mentioned herein are the trademarks, service marks, registered
trademarks or registered service marks of their respective owners.

COMSPHERE 3800 Series Modems – Model 3830
CNovember 1996 3830-A2-GB91-20
Important Safety Instructions
1. Read and follow all warning notices and instructions marked
on the product or included in the manual.
2. This product is intended to be used with a three-wire
grounding type plug – a plug which has a grounding pin.
This is a safety feature. Equipment grounding is vital to
ensure safe operation. Do not defeat the purpose of the
grounding type plug by modifying the plug or using an
adaptor.
Prior to installation, use an outlet tester or a voltmeter to
check the ac receptacle for the presence of earth ground. If
the receptacle is not properly grounded, the installation must
not continue until a qualified electrician has corrected the
problem.
If a three-wire grounding type power source is not available,
consult a qualified electrician to determine another method
of grounding the equipment.
3. Slots and openings in the cabinet are provided for
ventilation. To ensure reliable operation of the product and to
protect it from overheating, these slots and openings must
not be blocked or covered.
4. Do not allow anything to rest on the power cord and do not
locate the product where persons will walk on the power
cord.
5. Do not attempt to service this product yourself, as opening
or removing covers may expose you to dangerous high
voltage points or other risks. Refer all servicing to qualified
service personnel.
6. General purpose cables are provided with this product.
Special cables, which may be required by the regulatory
inspection authority for the installation site, are the
responsibility of the customer.
7. When installed in the final configuration, the product must
comply with the applicable Safety Standards and regulatory
requirements of the country in which it is installed. If
necessary, consult with the appropriate regulatory agencies
and inspection authorities to ensure compliance.

Safety Instructions
D3830-A2-GB91-20 November 1996
8. A rare phenomenon can create a voltage potential between
the earth grounds of two or more buildings. If products
installed in separate buildings are interconnected, the
voltage potential may cause a hazardous condition. Consult
a qualified electrical consultant to determine whether or not
this phenomenon exists and, if necessary, implement
corrective action prior to interconnecting the products.
In addition, if the equipment is to be used with telecommunications
circuits, take the following precautions:
– Never install telephone wiring during a lightning storm.
– Never install telephone jacks in wet locations unless the
jack is specifically designed for wet locations.
– Never touch uninsulated telephone wires or terminals
unless the telephone line has been disconnected at the
network interface.
– Use caution when installing or modifying telephone lines.
– Avoid using a telephone (other than a cordless type)
during an electrical storm. There may be a remote risk of
electric shock from lightning.
– Do not use the telephone to report a gas leak in the
vicinity of the leak.

COMSPHERE 3800 Series Modems – Model 3830
ENovember 1996 3830-A2-GB91-20
Notices
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Safety Instructions
F3830-A2-GB91-20 November 1996
Government Requirements and Equipment Return
Certain governments require that instructions pertaining to modem
connection to the public switched telephone network be included in the
installation and operation manual. Specific instructions are listed in the
following sections.
United States
Notice To Users Of The Public Switched Telephone Network
1. This equipment complies with Part 68 of the FCC rules. On the
equipment is a label that contains, among other information, the
FCC registration number and ringer equivalence number (REN)
for this equipment. The label is located on the bottom of the Model
3830 modem.
2.
Page A of this manual contains the Universal Service Order Codes
(USOC) associated with the services on which the equipment is to
be connected.
3. The Ringer Equivalence (REN) is used to determine the quantity
of devices which may be connected to the telephone line.
Excessive RENs on the telephone line may result in the devices not
ringing in response to an incoming call. In most, but not all areas,
the sum of the RENs should not exceed five (5.0). To be certain of
the number of devices that may be connected to the line, as
determined by the total RENs, contact the telephone company to
determine the maximum RENs for the calling area.
4. If the Model 3830 modem causes harm to the telephone network,
the telephone company will notify you in advance that temporary
discontinuance of service may be required. But if advance notice is
not practical, the telephone company will notify the customer as
soon as possible. Also, you will be advised of your right to file a
complaint with the FCC if you believe it is necessary .
5.
The telephone company may make changes in its facilities,
equipment, operations, or procedures that could affect the
operation of the equipment. If this happens, the telephone
company will provide advance notice in order for you to make the
necessary modifications in order to maintain uninterrupted service.

COMSPHERE 3800 Series Modems – Model 3830
GNovember 1996 3830-A2-GB91-20
6. If you experience trouble with this equipment, please contact your
sales or service representative (as appropriate) for repair or
warranty information. If the product needs to be returned to the
company service center for repair, contact them directly for return
instructions using one of the following methods:
•Via the Internet: Visit the Paradyne World Wide Web site at
http://www.paradyne.com
•Via Telephone: Call our automated call system to receive
current information via fax or to speak with a company
representative.
— Within the U.S.A., call 1-800-870-2221
— International, call 727-530-2340
If the trouble is causing harm to the telephone network, the
telephone company may request that you remove the equipment
from the network until the problem is resolved.
7. The user is not authorized to repair or modify the equipment
beyond replacing the ac line fuse. Refer to the installation section
of this manual for more information.
8. This equipment cannot be used on public coin service provided by
the telephone company. Connection to Party Line Service is
subject to state tariffs. (Contact the state public utility commission,
public service commission or corporation commission for
information.)
9. The Telephone Consumer Protection Act of 1991 makes it
unlawful for any person to use a computer or other electronic
device to send any message via a telephone fax machine unless
such a message clearly contains, in a margin at the top or bottom
of each transmitted page, or on the first page of the transmission,
the date and time it is sent, and an identification of the business, or
other entity, or other individual sending the message, and the
telephone number of such business, or other entity, or individual.
In order to program this information, follow the steps outlined in
the manual supplied with your fax software.
10. An FCC compliant telephone cord with modular plugs may be
provided with this equipment. This equipment is designed to be
connected to the telephone network or premises wiring using a
compatible modular jack which is Part 68 compliant.

Safety Instructions
H3830-A2-GB91-20 November 1996
Canada
Notice To The Users Of The Canadian Public
Switched Telephone Network
The Canadian Department of Communications label identifies certified
equipment. This certification means that the equipment meets certain
telecommunications network protective, operational and safety
requirements. The Department does not guarantee the equipment will
operate to the user’
s satisfaction.
Before installing this equipment, users should ensure that it is
permissible to be connected to the facilities of the local
telecommunications company . The equipment must also be installed
using an acceptable method of connection. In some cases, the
company’ s inside wiring associated with a single line individual service
may be extended by means of a certified connector assembly
(telephone extension cord). The customer should be aware that
compliance with the above conditions may not prevent degradation of
service in some situations.
Repairs to certified equipment should be made by an authorized
Canadian maintenance facility designated by the supplier . Any repairs
or alterations made by the user to this equipment, or equipment
malfunctions, may give the telecommunications company cause to
request the user to disconnect the equipment.
Users should ensure for their own protection that the electrical ground
connections of the power utility, telephone line and internal metallic
water pipe system, if present, are connected together. This precaution
may be particularly important in rural areas.
CAUTION
Users should not attempt to make such
connections themselves, but should contact
the appropriate electric inspection authority,
or electrician, as appropriate.
The Load Number for this equipment is listed on page A of this
manual. The Load Number (LN) assigned to each terminal device
denotes the percentage of the total load to be connected to a telephone
loop which is used by the device to prevent overloading. The

COMSPHERE 3800 Series Modems – Model 3830
INovember 1996 3830-A2-GB91-20
termination on a loop may consist of any combination of devices
subject only to the requirement that the total of the Load Numbers of
all devices does not exceed 100.
If your equipment is in need of repair, refer to the procedure in the
Government Requir ements and Equipment Return section.

i3830-A2-GB91-20 November 1996
Preface
Objectives and Reader Assumptions
This manual describes how to install and operate the Model 3830
standalone modem. This manual assumes that you have a basic
understanding of dial modems and their operation.
How to Use this Manual
Chapter 1 provides information about the 3830 modem’ s hardware and
software features, including the front panel and status indicators.
Chapter 2 provides instructions for installing the modem, selecting
factory configuration options, recovering the ability to use ATt
commands, and using A T command initialization strings.
Chapter 3 provides general information about fax modem operation.
Chapter 4 provides instructions for displaying and changing AT
commands and S-Registers. These commands control all aspects of the
modem’s operation.
Appendix A provides instructions for performing diagnostic tests when
data communications problems occur.
Appendix B lists the technical specifications of the 3830 modem.
Appendix C provides EIA RS-232 pin assignments.
Appendix D provides V.25 bis dialing information.
The Glossary provides a description of terms used throughout this
manual.

COMSPHERE 3800 Series Modems – Model 3830
ii November 1996 3830-A2-GB91-20
Related Documents
Call your sales representative to order additional product
documentation.
3810-A2-GB91 COMSPHERE 3800 Series Modems, Models 3810,
381
1, and 3820, User ’ s Guide
6700-A2-GY31 COMSPHERE 6700 Series Network Management
System User ’ s Guide

iii3830-A2-GB91-20 November 1996
Table of Contents
1. Introduction
Overview 1Ć1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Features 1Ć2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE Model 3830 Modem Front Panel
and Status Indicators 1Ć3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Model 3830 Modem Installation
Overview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 3830 Modem Package 2-1. . . . . . . . . . . . . . . . . . . . . . . .
Model 3830 Installation 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTE Connection 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dial-Line Connection 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-Wire Leased-Line Connection 2-5. . . . . . . . . . . . . . . . . . . . . .
T
elephone Connection 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC Power Transformer Connection 2-5. . . . . . . . . . . . . . . . . . .
Communications Software Installation 2-6. . . . . . . . . . . . . . . . .
Modem Power-Up 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting Factory Configuration Options 2-7. . . . . . . . . . . . . . .
Recovering AT Commands 2-9. . . . . . . . . . . . . . . . . . . . . . . . . .
Initialization Strings 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Fax Operation
Overview 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fax Operation 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 3800 Series Modems – Model 3830
iv November 1996 3830-A2-GB91-20
4. AT Command Set and S-Registers
Overview 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Modes 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Command Guidelines 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AT Command List 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
S-Register List 4-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendices
ATroubleshooting A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BT
echnical Specifications B-1. . . . . . . . . . . . . . . . . . . . . . .
C
Pin Assignments C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DCCITT V
.25 bis Dialing Commands and Response D-1. . .
Glossary
Index

Table of Contents
v3830-A2-GB91-20 November 1996
List of Figures
Figures Page
1-1 Model 3830 Front Panel 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1 Model 3830 Rear Panel 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-1 Wiring Diagram – 8-Position to 6-Position
Conversion Cable C-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 3800 Series Modems – Model 3830
vi November 1996 3830-A2-GB91-20
List of Tables
Tables Page
1-1 Model 3830 LEDs 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1 Result Codes 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-2
Model 3830 A T Commands 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-3
Model 3830 S-Registers 4-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-1
Modem Health A-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-2 Modem – DTE Connection A-3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-3
Modem – VF Connection A-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-4 Online Operation A-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-5 Leased-Line Operation A-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B-1 T
echnical Specifications B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-1 EIA-232-D Pin Assignments C-1. . . . . . . . . . . . . . . . . . . . . . . . . . .
C-2
VF Connector Pin Assignments for Leased Lines C-5. . . . . . . . . . .
D-1 V
.25 bis Commands D-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-2 V
.25 bis Response Messages D-9. . . . . . . . . . . . . . . . . . . . . . . . . . .

1-13830-A2-GB91-20 November 1996
Introduction
Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE Model 3830 Modem Front Panel and Status Indicators 1-3. . . . .
Status Indicators (LEDs) 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview
The Model 3830 modem is a member of the COMSPHEREr3800
Series Modem product line. The Model 3830 modem is a high-speed
dial modem that of
fers reliable asynchronous and synchronous
operation over dial- or two-wire leased-line networks. The Model
3830’
s software defineability allows you to add enhancements and new
features as they become available, with no further investment in
hardware, no on-site personnel, and minimal downtime.
High-speed data transfer and reliable throughput at data rates as high as
19,200 bps (V.32terbo) over dial lines is guaranteed by employing the
latest techniques in CCITT V .42 bis/MNP r Class 5 data compression
and CCITT V.42/MNP error correction. In addition to fast line speeds,
the modem can send data to the DTE at speeds as high as 1 15,200 bps.
The Model 3830 modem is extremely versatile when used in modem
pooling environments; it allows multiple users to temporarily
customize settings in the Model 3830, thereby permitting
communication with the calling modem. Upon disconnection, the
Model 3830 modem falls back to its original configuration settings and
resumes normal operation.
The modem’s compatibility with a number of dialing methods and
protocols, such as asynchronous A Ttcommands and CCITT V .25 bis
dialing, permits the Model 3830 to be used in a variety of applications
and environments while also allowing control over modem
configuration, dialing, and diagnostics. The modem offers two preset
factory configurations containing the most often used modem settings.
These factory presets provide quick configuration for any
asynchronous or UNIXrhardware-based dial environment.
1

COMSPHERE 3800 Series Modems – Model 3830
1-2 November 1996 3830-A2-GB91-20
Features
The 3830 modem has a wide variety of features, including:
•Dial-Line Modulations: V.32terbo (19,200 and 16,800 bps),
CCITT V.32 bis (14,400, 12,000, 9600, 7200, and 4800 bps),
V.32 (9600 and 4800 bps), V.22 bis (2400 bps),
V.22 (1200 bps), V.21 (300 bps), Bell 212A (1200 bps), and
Bell 103J (300 bps).
•Two-wire Leased-Line Modulations: V.32terbo (19,200 and
16,800 bps), V.32 bis (14,400, 12,000, 9600, 7200, and
4800 bps), and V.32 (9600 and 4800 bps).
•Optional Fax modulations: CCITT V.17 (14,400, 12,000,
9600, 7200 bps), CCITT V.29 (9600 and 7200 bps), and
CCITT V.27 ter (4800 and 2400 bps).
•Convenient migration to new or optional features through
software downloading.
•CCITT V
.42 bis and MNP Class 5 data compression.
•Virtual error-free data integrity with CCITT V .42 and MNP
Level 4 error control.
•Asynchronous dial DTE data rates from 300 bps – 1
15,200 bps.
•A unique Paradyne modem pooling feature that preserves the
answering modem’s permanent configuration, but allows
multiple users to temporarily adapt parameters for individual
requirements.
•Enhanced Throughput Cellulart, which improves reliability and
speed over cellular links.
•Compatibility with the industry de facto standard AT Command
set.
•
High-speed transmission using asynchronous, synchronous, or
UNIX devices over full- or half-duplex dial networks or 2-wire
leased lines.
•Support as a remote device by the COMSPHERE 6700 Series
Network Management System.

1. Introduction
1-33830-A2-GB91-20 November 1996
•Compatibility with COMSPHERE 3800 Series modems’
Remote Access Mode, which allows users of 3810, 381 1, and
3820 modems to view the configuration options of a 3830
modem from their front panel LCD displays.
•Storage of up to 10 telephone numbers to directory locations.
•Two factory-defined configurations and two user-defined
configuration areas.
COMSPHERE Model 3830 Modem Front Panel
and Status Indicators
The front panel of the Model 3830 modem is equipped with a
speaker and 13 LEDs (status indicators) that monitor modem
activity (Figure 1-1).
PWR ALRM CTS TXD LSD RXD EC RATE
105 106 103 109
108
COMSPHERE 3830
496-14007-0
1
SQRTS
DTR
104
OH AT
Figure 1-1. Model 3830 Front Panel
Status Indicators (LEDs)
The Model 3830’s status indicators continuously provide information
on the modem’s operating condition. Table 1-1 lists the label, color and
functionality of each status indicator.

COMSPHERE 3800 Series Modems – Model 3830
1-4 November 1996 3830-A2-GB91-20
Table 1-1
(1 of 2)
Model 3830 LEDs
Label Color Indicates
PWR green Power
ON. Power is on and the modem is capable of
operating.
ALRM red Alarm Flashing
The modem has detected an internal
malfunction.
OH green Off-Hook
ON. The modem is off-hook.
OFF. The modem is on-hook.
DTR/108 green Data Terminal Ready
The DTE has turned ON DTR or the modem
has forced DTR ON.
RTS/105 green Request-to-Send
The DTE has data to send to the modem.
CTS/106 green Clear-to-Send
The modem is ready to receive data from the
DTE.
TXD/103 green Transmit Data
The modem is receiving data from the DTE to
transmit.
LSD/109 green Line Signal Detect
The modem has detected a valid carrier
signal and is capable of transferring data to
the DTE.
RXD/104 green Receive Data
Data is being transferred to the DTE.
SQ yellow Signal Quality
The receive telephone line signal is degraded.
EC green Error Control
Modem is in Error Control mode.