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M-XM128NA-1

November 1997

NETGEAR, Inc.

A Bay Networks Company

48105 Warm Springs Blvd.

Fremont, CA 94539

USA

Reference Guide for the

Model XM128 ISDN

Digital Modem

Trademarks

Bay Networks is a registered trademark of Bay Networks, Inc.

NETGEAR and FirstGear are trademarks Bay Networks, Inc.

Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation.

Other brand and product names are trademarks of their respective holders.

Statement of Conditions

In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to

make changes to the products described in this document without notice.

NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit

layout(s) described herein.

Federal Communications Commission (FCC) Compliance Notice: Radio Frequency Notice

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

• This device may not cause harmful interference.

• This device must accept any interference received, including interference that may cause undesired operation.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part

15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a

residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and

used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no

guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to

radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try

to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

EN 55 022 Declaration of Conformance

This is to certify that the NETGEAR Model XM128 Digital Modem is shielded against the generation of radio

interference in accordance with the application of Council Directive 89/336/EEC, Article 4a. Conformity is declared by

the application of EN 55 022 Class B (CISPR 22).

iii

Bestätigung des Herstellers/Importeurs

Es wird hiermit bestätigt, daß das Model NETGEAR Model XM 128 ISDN Digital Modem gemäß der im

BMPT-AmtsblVfg 243/1991 und Vfg 46/1992 aufgeführten Bestimmungen entstört ist. Das vorschriftsmäßige Betreiben

einiger Geräte (z.B. Testsender) kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die

Anmerkungen in der Betriebsanleitung.

Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt

gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.

Certificate of the Manufacturer/Importer

It is hereby certified that the NETGEAR Model XM128 Digital Modem has been suppressed in accordance with the

conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example,

test transmitters) in accordance with the regulations may, however, be subject to certain restrictions. Please refer to the

notes in the operating instructions.

Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and

has been granted the right to test the series for compliance with the regulations.

VCCI-2 Statement

This equipment is in the second Class category (information equipment to be used in a residential area or an adjacent

area thereto) and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing

Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas.

When used near a radio or TV receiver, it may become the cause of radio interference.

Read instructions for correct handling.

Customer Support

For assistance with installing and configuring your NETGEAR system or with post-installation questions or problems,

contact your point of purchase representative.

To contact customer support or to purchase additional copies of this document and publications for other NETGEAR

products, you can contact NETGEAR at the following numbers:

• Phone:

U.S./Canada:1-800-211-2069

Japan: 0120-66-5402

Europe: (44) 171-571-5120

Australia:1-800-142-046

• Fax:

U.S./Canada: 510-498-2609

World Wide Web

NETGEAR maintains a World Wide Web Home Page that you can access at the universal resource locator (URL)

http://NETGEAR.baynetworks.com. A direct connection to the Internet and a Web browser such as Internet Explorer

or Netscape are required.

Bulletin Board Service

NETGEAR maintains a bulletin board that you can access to obtain information about the latest version of the software.

In the United States, phone 407-531-4574.

Reference Guide for the Model XM128 ISDN Digital Modem

Contents v

Contents

Preface

Purpose ..........................................................................................................................xvii

Conventions ...................................................................................................................xviii

Special Message Formats .......................................................................................xviii

Use of Enter, Type, and Press ................................................................................. xviii

Other Conventions ....................................................................................................xix

Related Publication ..........................................................................................................xix

Chapter 1

Introduction

Features ..........................................................................................................................1-1

Interface Options ......................................................................................................1-3

Front Panel .....................................................................................................................1-3

Rear Panel ......................................................................................................................1-6

Chapter 2

Installation

Package Contents ..........................................................................................................2-1

Installing the Modem ......................................................................................................2-2

Verifying Hardware Installation .......................................................................................2-3

Chapter 3

Setup for Windows 95 and Windows NT 4.0

Selecting the Appropriate Windows 95 Driver (INF file) .................................................3-1

x Contents

Reference Guide for the Model XM128 ISDN Digital Modem

Appendix D

Status Registers and Result Codes

Viewing and Setting S-Registers ................................................................................... D-1

Setting S-Registers ................................................................................................. D-2

Examples for Setting S-Registers ..................................................................... D-2

S-Register Descriptions .......................................................................................... D-4

ATXn Result Code Option Table ............................................................................ D-19

Result Code Chart Symbol Reference .................................................................. D-21

Result Code Field Descriptions ............................................................................. D-22

Connect Strings for Error Corrected Connections ................................................. D-23

Appendix E

Connector Pin Assignments

RJ-45 Plug and Connector ............................................................................................ E-1

RJ-11 Plug and Connector ............................................................................................ E-3

Appendix F

Serial Port Interface

RS-232 Serial Interface ..................................................................................................F-1

Asynchronous Cable Connections .................................................................................F-2

Appendix G

ISDN Reference

ISDN Overview ..............................................................................................................G-1

Basic Rate Interface ................................................................................................ G-2

Out-of-Band Signaling ............................................................................................. G-2

Terminal Adapter or Digital Modem .........................................................................G-3

ISDN Basic Rate Interface Points ...........................................................................G-3

SPID Setup ............................................................................................................. G-4

Ordering ISDN Service ..................................................................................................G-4

Order Form for AT&T 5ESS Switch (NI-1 ISDN) ............................................................G-6

Order Form for DMS-100 Switch (NI-1 or Custom ISDN) .............................................. G-7

Order Form for EWSD (NI-1 ISDN) ............................................................................... G-8

Index

Figures xi

Figures

Figure 1-1. Front panel of the Model XM128 modem (with S/T interface) ..................1-3

Figure 1-2. Front panel of the Model XM128 modem (with U interface) .....................1-4

Figure 1-3. Rear panel of the Model XM128 modem (with S interface) .....................1-6

Figure 1-4. Rear panel of the Model XM128 modem (with U interface) .....................1-6

Figure 2-1. Model XM128 modem connections ..........................................................2-2

Figure E-1. RJ-45 plug and RJ-45 connector ............................................................ E-1

Figure E-2. RJ-11 plug and RJ-11 connector ............................................................ E-3

xii Figures

Tables xiii

Tables

Table 1. Manual contents ........................................................................................xix

Table 2. Manuals ................................................................................................... xx

Table 1-1. Interface options ......................................................................................1-3

Table 1-2. LED descriptions ......................................................................................1-4

Table 1-3. Rear panel components ...........................................................................1-7

Table 4-1. Terminal programs ...................................................................................4-2

Table 4-2. Supported AT command types .................................................................4-3

Table 4-3. Result codes commands ..........................................................................4-4

Table 4-4. Switches supported by the Model XM128 modem ..................................4-5

Table 4-5. AT commands for setting protocols ..........................................................4-8

Table 4-6. AT commands for setting MSN ................................................................4-8

Table 5-1. S85 register values ..................................................................................5-4

Table 6-1. Dialing commands ...................................................................................6-3

Table 6-2. Call placing commands ............................................................................6-3

Table 6-3. Commands for assigning ISDN numbers .................................................6-6

Table 6-4. Best-effort call answering bit commands .................................................6-8

Table 6-5. ISDN protocol specifications ....................................................................6-9

Table 6-6. V.110 configuration commands ..............................................................6-10

xiv Tables

Table 7-1. S-register values and functions ................................................................7-2

Table 7-2. Outgoing low-layer compatibility commands ............................................7-3

Table 8-1. Frequently used AT commands ................................................................8-2

Table 8-2. Frequently used AT commands (European switches) ..............................8-2

Table 9-1. Definitions for the d modifier ....................................................................9-1

Table 10-1. Power-on self-test ..................................................................................10-1

Table 10-2. EPA Commands .....................................................................................10-6

Table 10-3. Commands for analyzing captured data ................................................10-6

Table 10-4. Control key functions .............................................................................10-7

Table B-1. Types of security ..................................................................................... B-2

Table B-2. Levels of security .................................................................................... B-3

Table B-3. Auto callback commands ........................................................................ B-4

Table C-1. Basic AT command set ........................................................................... C-2

Table C-2. ATI3 command output ............................................................................. C-8

Table C-3. Extended AT& command set ................................................................... C-8

Table C-4. Extended AT* command set .................................................................. C-12

Table D-1. Binary conversion table ........................................................................... D-3

Table D-2. Setting bit 3 ............................................................................................. D-3

Table D-3. Basic S-registers ATSn=x ....................................................................... D-4

Table D-4. Extended S-registers ATSn=x ................................................................. D-5

Table D-5. ATXn command setting options ............................................................ D-19

Table D-6. Result code chart .................................................................................. D-21

Table D-7. Result code field descriptions ............................................................... D-22

Table D-8. Connect strings ..................................................................................... D-23

Tables xv

Table E-1. RJ-45 plug and RJ-45 connector pin assignments for the S/T interface . E-2

Table E-2. RJ-45 plug and RJ-45 connector pin assignments for the U interface .... E-2

Table E-3. RJ-11 connector pin assignments ........................................................... E-3

Table F-1. Serial port interface ..................................................................................F-1

Table F-2. Asynchronous flow control cable connection ...........................................F-2

Table G-1. ISDN line configuration ...........................................................................G-6

Table G-2. ISDN line configuration ...........................................................................G-7

Table G-3. ISDN line configuration ...........................................................................G-8

xvi Tables

Preface xvii

Preface

Congratulations on your purchase of the NETGEAR

™ Model XM128 ISDN Digital Modem.

The NETGEAR Model XM128 modem provides connection for one or more PCs to the Internet

or to the office over ISDN (Integrated Services Digital Network) lines. The modem operates

at a speed of up to 460 kilobits per second (Kbps) data rate, or 115 Kbps data rate without

compression, and can download video clips, music, or high-resolution color graphics from the

World Wide Web or other online services many times faster than an analog modem. The Model

XM128 modem supports concurrent data and voice communications, reducing cost and

administration of multiple phone lines.

Purpose

This guide provides instructions for the installation and use of the Model XM128 modem. This

guide also provides instructions for the installation and use of FirstGear

™, a configuration software

application for installing, configuring, and monitoring the Model XM128 modem.

Reference Guide for the Model XM128 ISDN Digital Modem

Preface xix

Other Conventions

This guide uses the following additional conventions:

italics Book titles and UNIX file, command, and directory names.

courier font Screen text, user-typed command-line entries.

Initial Caps Menu titles and window and button names.

[Enter] Named keys in text are shown enclosed in square brackets. The notation

[Enter] is used for the Enter key and the Return key.

[Ctrl]+C Two or more keys that must be pressed simultaneously are shown in text

linked with a plus (+) sign.

ALL CAPS DOS file and directory names.

Related Publication

Refer to Getting Started Using FirstGear for the Model XM128 ISDN Digital Modem for a quick

installation guide. Refer to Table 1 to identify the contents of both manuals. The subject column in

this table identifies the order of basic procedures you must complete to install your Model XM128

modem.

Table 1. Manual contents

Subject

Getting Started Using FirstGear

for the Model XM128 ISDN Digital

Modem

Reference Guide for the Model

XM128 ISDN Digital Modem

Installing modem hardware Chapter 3 Chapter 2

Configuring the modem Chapter 3

(If you are using Windows® 95

or Windows NT®)

Chapter 4

(If you are using a terminal

program.)

Installing the Windows 95 and

Windows NT Driver

Chapter 3 No information given.

Installing FirstGear Chapter 3 No information given.

Assigning ISDN numbers Chapter 3 Chapter 4 and Chapter 5

(For using AT commands when

assigning ISDN numbers.)

Reference Guide for the Model XM128 ISDN Digital Modem

xx Preface

Table 2 lists the manuals that are available for various localized products.

Assigning multiple subscriber

numbers

Chapter 3 Chapter 5

(For using AT commands when

assigning multiple subscriber

numbers.)

Assigning protocols Chapter 3 Chapter 4 and Chapter 5

(For using AT commands when

assigning protocols.)

Configuring Windows 95 Dial-Up

Networking

Chapter 3 See:

Getting Started Using

FirstGear

Table 2. Manuals

Language Product Model/

Version Interface Reference

Manual

FirstGear

Manual

English Model XM128S

International

S/T M-XM128NA-0 M1-XM128S-0

English Model XM128AU

North America

U M-XM128NA-0 M1-XM128U-0

Japanese Model XM128D

Japanese

DSU M-XM128JP-0 M1-XM128JP-0

German Model XM128GE

German

S/T M-XM128NA-0 M1-XM128S-0

Korean Model XM128KO

Korean

U M-XM128KO-0 M1-XM128KO-0

Table 1. Manual contents (continued)

Subject

Getting Started Using FirstGear

for the Model XM128 ISDN Digital

Modem

Reference Guide for the Model

XM128 ISDN Digital Modem

Introduction 1-1

Chapter 1

Introduction

Congratulations on your purchase of the NETGEAR Model XM128 ISDN Digital Modem. The

Model XM128 modem sets a new price and performance standard for the rapidly growing Internet

and telecommuting applications.

When used with off-the-shelf Internet or remote access client software, the Model XM128 modem

enables mobile or home users to easily connect to the Internet or branch offices over Integrated

Services Digital Network (ISDN) lines. The same device also allows a user to connect to the

analog world via a modem, fax machine, or telephone connected directly to the Model XM128

modem.

To take advantage of constant new developments, the Model XM128 modem employs flash

EPROMs, which allow for convenient uploading of newly available firmware that preserves your

hardware investment.

The Model XM128 modem supports both D and B channel protocols. For the D channel,

it supports DSS1, 1TR6, DMS-100, AT&T Custom, and NI-1. For the B channel, it supports

X.75 SLIP, V.120, V.110, PPP Async-to-sync Conversion and Bundle (128 Kbps).

With its Hi/fn LZS or V.42bis compression on the B channel using either X.75 or V.120, the Model

XM128 modem can effectively communicate at speeds up to 460 kilobits per second (Kbps) over

ISDN lines.

Features

The Model XM128 modem supports a variety of compression schemes including V.42bis and

Hi/fn LZS Compression (STAC) and communicates effectively at speeds up to 460 kilobits per

second (Kbps) over ISDN lines.

Reference Guide for the Model XM128 ISDN Digital Modem

1-2 Introduction

The Model XM128 modem has two analog ports to connect analog devices such as fax machines,

modems, and telephones. Two different devices can communicate over the two B channels to

different locations simultaneously, enabling you to send a fax and make a voice call at the same

time. The analog ports recognize standard dual-tone multifrequency (DTMF) tones as well as

pulse dialing.

The Model XM128 modem has the following features:

• Plug-and-Play support for a windows 95® environment

• Full compatibility with both ISDN and remote public-switched telephone network (PSTN) by

way of ISDN

• Multiple signaling protocol compatibility with DSS1, 1TR6, NI-1, AT&T 5ESS, and Northern

Telecom DMS 100 network switches

• X.75, V.110, V.120, and Point-to-Point Protocol (PPP) Async-to-Sync Conversion B Channel

Protocol support

• B channel speeds of 56 Kbps (in-band signaling) and 64 Kbps (out-of-band signaling)

• MLP and Multipoint PPP (RFC1717)

• Hi/fn LZS compression (STAC)

• V.42bis data compression using the X.75, V.120, and bundle protocols

• NETGEAR ISDN AT modem commands

• Automatic ISDN and analog call detection

• Two analog telephone jacks (analog adapters)

• Push-button switch for quick dial and teardown

• Easy-to-use configuration software

• Flash EPROM memory for easy rmware upgrades

Reference Guide for the Model XM128 ISDN Digital Modem

Introduction 1-3

Interface Options

Several interfaces are available. Table 1-1 lists the interface options for the Model XM128 modem

as applicable for each region.

For the North American ISDN, NETGEAR provides an optional 2B1Q U interface to allow direct

connection to the network without the use of an external NT-1 device.

Front Panel

For easier management and control of the Model XM128 modem, familiarize yourself with the

components on the front panel, as illustrated in and Figure 1-1 Figure 1-2. Use the key at the

bottom of each illustration to identify the panel components.

Key:

1 = PWR (power) LED

2 = ISDN LEDs

3 = RS-232 COM LEDs

4 = PHONE 1 and PHONE 2 LEDs

Figure 1-1. Front panel of the Model XM128 modem (with S/T interface)

Table 1-1. Interface options

XM128NA XM128GE XM128UK XM128AU XM128JP

Unit XM128U XM128S XM128S XM128S XM128D

Region North America Germany UK Australia Japan

Interface U (internal NT-1) S/T S/T S/T Internal DSU

Auto SPID Switch

7848MEA

DTR DSR RTS CTS TDDPWR B1 B2 AA CP

ISDN

RD 1 2

ISDN Digital Modem

INTERFACE

128Kpbs

MODEL XM128

COM

2 3 4

Reference Guide for the Model XM128 ISDN Digital Modem

1-4 Introduction

Key:

1 = PWR (power) LED

2 = ISDN LEDs

3 = RS-232 COM LEDs

4 = PHONE 1 and PHONE 2 LEDs

Figure 1-2. Front panel of the Model XM128 modem (with U interface)

LEDs on the front panel of the Model XM128 modem allow you to monitor and diagnose the

device. describes each LED.Table 1-2

Table 1-2. LED descriptions

Label Color Activity Description

PWR

(Power)

Yellow On Power is supplied to the modem.

ISDN LEDs:

D Green On The ISDN link on the D channel is active.

Blinking The modem is attempting to make a connection to the switch.

B1 On A connection is established to the B1 channel.

B2 On A connection is established to the B2 channel.

AA On The Model XM128 modem is in the automatic answering mode.

CP Blinking An incoming call is ringing.

On Compression is active on either of the B channels.

7847MEA

DTR DSR RTS CTS TDDPWR B1 B2 AA CP

ISDN

RD 1 2

ISDN Digital Modem

INTERFACE

128Kpbs

MODEL XM128

COM

2 3 4

Reference Guide for the Model XM128 ISDN Digital Modem

1-6 Introduction

Rear Panel

As illustrated in Figure 1-3 and Figure 1-4, the rear panel contains a power switch, a power

receptacle, and ports to connect a computer, ISDN line, and two analog devices (phone, fax, or

modem).

key:

1 = ON/OFF switch

2 = Receptacle for power adapter

3 = RS-232 COM port for connecting to a computer

4 = ISDN port for connecting to an ISDN line NT-1

5 = PHONE 1 and PHONE 2 ports for connecting analog devices (telephone, fax, or modem)

Figure 1-3. Rear panel of the Model XM128 modem (with S interface)

Key:

1 = ON/OFF switch

2 = Receptacle for power adapter

3 = RS-232 COM port for connecting to a computer

4 = ISDN port for connecting to an ISDN line

5 = PHONE 1 and PHONE 2 ports for connecting analog devices (telephone, fax, or modem)

Figure 1-4. Rear panel of the Model XM128 modem (with U interface)

7861MEA

RS-232POWER

ON/OFF

1 2 3

ISDN-S PHONE 1PHONE 2

7862MEA

RS-232

POWER

ON/OFF

1 2 3

ISDN-U PHONE 1 PHONE 2

Reference Guide for the Model XM128 ISDN Digital Modem

Introduction 1-7

Table 1-3 describes the components on the rear panel of the Model XM128 modem.

Table 1-3. Rear panel components

Label Description

ON/OFF This switch turns power on or off.

POWER This is the power receptacle for the power adapter.

RS-232 This RS-232 COM port is for connecting the Model XM128 modem to the serial port

of a computer or data terminal.

ISDN This port is for connecting the RJ-45 connector of an ISDN line.

PHONE 1 This port is for connecting the RJ-11 connector of an analog device (telephone, fax,

or analog modem).

PHONE 2 This port is for connecting the RJ-11 connector of an analog device (telephone, fax,

or analog modem).

Installation 2-1

Chapter 2

Installation

This chapter information about installing and using the Model XM128 ISDN Digital Modem.

Package Contents

Your package should contain the following items:

• Model XM128 ISDN Digital Modem

• Power adapter

• RJ-45 ISDN telephone cable

• Shielded RS-232 25-pin to 25-pin cable

• 25-pin to 9-pin adapter

• This manual

• Getting Started Using FirstGear

• CD ROM with bundled software

• 3.5-inch driver and utility diskettes

• Warranty Registration Card

Call your reseller or customer support in your area if there are any wrong, missing, or damaged

parts. Refer to page iii for the location of customer support in your area.

Keep the carton, including the original packing materials. Use them to repack the modem if you

need to return it for repair.

Setup for Windows 95 and Windows NT 4.0 3-1

Chapter 3

Setup for Windows 95 and Windows NT 4.0

This chapter contains step-by-step procedures both for installing the Windows NT and

Windows 95 drivers and for configuring Dial-Up Networking for the Model XM128 modem.

Selecting the Appropriate Windows 95 Driver (INF file)

If your computer supports the Plug-and-Play feature, be sure your Model XM128 modem is

powered on before starting your computer. If you are using a non-Plug-and-Play protocol, follow

the steps to complete installation:

1. Open the Control Panel by double-clicking the Control Panel icon in your My Computer

folder.

2. Double-click on Modems.

3. Click on Add.

The Install New Modem screen appears.

4. Select Don't detect my modem; I will select from a list.

5. Click on Next.

6. Click on Have Disk.

7. Insert the NETGEAR Windows 95 driver disk into your oppy drive and click on OK.

8. If you have downloaded an updated INF file from NETGEAR’s Web site or BBS, use

Browse to find the location of the updated INF file, click on Open, then click on OK.

Configuration 4-1

Chapter 4

Configuration

This chapter describes the procedures for configuring your Model XM128 modem and your ISDN

line.

Configuring Your ISDN Line and Network

The setup procedure for the Model XM128 modem needs to be done only once. The settings are

stored in the nonvolatile random access memory (NVRAM) of the modem. Turning power on and

off will not erase the information. The only time that you need to reconfigure your line is when you

perform a hardware reset on your modem when you change options on your ISDN line.

NETGEAR provides a simple Windows 95 or NT 4.0 utility to help you set up the Model XM128

modem. Refer to Getting Started Using FirstGear for the XM128 ISDN Digital Modem

for

complete instructions. This chapter explains how to set up your switch using the Windows/

Windows 95 utility that comes with the modem.

If your Model XM128 modem is not going to be set up by a computer running Windows, use

a terminal program that allows you to send AT commands to the modem and receive responses

from it.

Configuring Your Modem Using a Terminal Program

If you are not running Windows 95 or Windows NT, configure your Model XM128 modem with

a terminal program that allows you to send and receive AT commands and responses from the

modem.

NETGEAR recommends that you have your Model XM128 modem ready to use before the

telephone company installs your ISDN line. If the modem is ready, you can enter the SPID and

confirm that the ISDN network is responding properly before the telephone installer leaves.

Reference Guide for the Model XM128 ISDN Digital Modem

Async to Sync PPP 5-5

Each Octet_i is in the range from 0 to 255. The angle brackets (<) and (>) are part of the this

command. The command ATEPD? can be used to view current setting of the Endpoint

Discriminator Address.

Call Bumping Dynamic Channel Allocation

When call bumping, Dynamic Channel Allocation (DCA) is enabled (by default), you can place or

answer a voice call (and only one) from a device that is attached to one of the phone ports. The call

can be placed while a Multilink PPP call is active. The Model XM128 modem automatically

removes one of the Multilink PPP connections and uses it for the voice call. When the voice call

ends, the Model XM128 modem automatically reestablishes that channel for Multilink PPP

operation. The call bumping DCA function is only effective when the Model XM128 modem is at

the calling site (the client site). The following command can be used to select the DCA function:

ATCE0 (disables call bumping)

ATCE1 (enables call bumping by default)

Note: The Endpoint Discriminator option is not required in most cases, thus users don't

have to change the default settings. The system administrator of your corporate or the

Internet service provider provides these values if the Endpoint Discriminator option is

required.

Produktspecifikationer

Varumärke:	Netgear
Kategori:	Inte kategoriserad
Modell:	XM128

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