Actiontec electronic IS560LH User Manual

V.90 Internal Voice/Fax

Windows Modem

User's Manual

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Table of Contents

Proprietary Notice and Disclaimer.....................................................2

Contacting Actiontec Customer Support ............................................ 3

Introduction ........................................................................................... 3

Do This First...........................................................................................4

For Windows 95 and Windo ws 98 Installations.................................. 4

For Windows NT 4.0 Installation........................................................ 7

Installing The Modem ............................................................................ 9

Hardware Installation......................................................................... 9

Connecting Devices T o The Modem ................................................ 11

Configuring Windows 95.................................................................. 12

Configuring Windows 95 OEM SR2.................................................15

Configuring Windows 98.................................................................. 19

Configuring Windows NT 4.0........................................................... 26

Installing and Configuring Communications Software .................... 30

The Modem’s Voice Features .......................................................... 30

T r oubleshooting .................................................................................. 32

Windows 95 and Windo ws 98..........................................................32

Uninstalling the Modem...................................................................34

Note to users of Windows 95 and 98............................................... 35

Note to users of Windows NT......................................................... 36

Common Problems ......................................................................... 37

Appendix A: AT Command Set ........................................................... 39

AT Commands ................................................................................ 39

AT Commands for Testing and Debugging....................................... 62

S-Registers Reference....................................................................65

Appendix B: Communications Regulations ...................................... 76

Proprietary Notice and Disclaimer

Unless otherwise noted, this document and the information herein disclosed are proprietary to Action-
tec Electronics, Inc. Any person or entity to whom this document is furnished or who otherwise has
possession thereof, by acceptance agrees that it will not be copied or reproduced in whole or in part,
nor used in any manner except to meet the purposes for which it was delivered.

The information in this document is subject to change without notice and should not be construed as
a commitment by Actiontec. Although Actiontec will make every effort to inform users of substantive
errors, Actiontec disclaims all liability for any loss or damage resulting from the use of this document or
any hardware or software described herein, including without limitation contingent, special or inciden­tal liability.

Note: PC is a trademark of IBM Corporation. Windows 95 and Windows NT are trademarks of Microsoft, Inc. K56flex is a trademark
of Lucent Technologies, Inc. and Rockwell International.

2

Introduction

Thank you for purchasing the Actiontec 56K ISA Advantage V.90 internal modem.
The Advantage incorporates the latest technology in host-based V.90 modems. This
new technology provides vast improvements in both the performance and the capa­bilities of personal computer fax/modems.

Controller-less modems, also known as Win Modems or Windows Modems, utilize
your computer’s Central Processing Unit (or CPU) to perform some of their func­tions. The modems on-board Digital Signal Processing (DSP) circuitry handles the
most processor-intensive functions such as V.90 and V.34 modulation leaving the
system CPU to perform mundane tasks like data compression. This sharing of sys­tem resources results in a streamlined, more reliable modem that does not tax overall
system speed. This modem also benefits from greater access to memory and disk
storage space through the system CPU.

Because their control code resides on disk and is easily upgradable, host-based mo­dems keep up with advances in speed and capabilities that Personal Computers make.
Simply download the new driver, follow the installation instructions, and reboot
your system to take advantage of the latest improvements in personal computer hard­ware design and performance.

Contacting

Actiontec Electronics prides itself on making high-quality, durable, high-performance
products. If you should need assistance, the Actiontec Technical Support Department
is available from 7:00 AM to 7:00 PM Pacific Coast Time, Monday through Friday
to provide professional support.

Actiontec Electronics, Inc.
Technical Support
760 N. Mary Avenue
Sunnyvale, CA 94086

New drivers are released as need arises to insure maximum compatibility and opera­tion of your new modem. Find out about these and other new Actiontec products at
the Actiontec web site:

Action

tec Customer Support

Phone: [phone] (choose option 7)
Fax: [phone]
BBS: 408-732-0112
Email:[e-mail]

http://www.actiontec.com

3

Do This First

Please read the following tips before attempting to install your new modem.

For Windows 95 and Windows 98 Installations

Be sure to remove all other modem drivers from your operating system. To do this,
right-click My Computer, choose Properties from the menu that appears, then click
on the Device Manager tab. Double-click the Modems icon in the list of devices to
show the modems installed. Click once on the icon next to any modems in this list to
select them. When all of the modems are selected, click Remove.

Turn off the computer and physically remove your old modem from the system. Once

you remove the old modem and its drivers from your system, you will need the old modem
driver diskette if you wish to reinstall it at a later date.

Restart the computer. On the taskbar, click Start. On the Start menu, click Settings,
then click Control Panel. Double-click on the Modems icon. Select all of the listed
modems and click Remove. Shut down (rather than restart) the computer. Wait 5
seconds before turning it back on.

Figure 1: The Modems Properties Panel

4

If you are going to use the Telephone Answering Machine (TAM) functions of the
modem and you are running Windows 95, you need to install a software component
called Unimodem V. If you have Windows 95 OEM Service Release 2 (Version

4.00.950 B) or a later version of Windows, this component comes standard as part of
the operating system.

To find out which version of Windows 95 you are using, right click the My Com-
puter icon on the desktop, and choose Properties from the menu that appears. If the
version of Windows 95 is 4.00.950 or 4.00.950A, go to the UNIMODEM directory
of the CD-ROM that came with your modem and right-click on the UNIMODV.INF
icon, (this may be named UNIMODV) then click on Install.. Restart your computer
to enable the drivers.

Make sure you have an available COM port and IRQ on your computer. The mo­dem needs one IRQ and one COM Port in order to function. To check which inter­rupts are available on your system, double-click on the System icon in Control Panel
and click the Device Manager tab. Highlight Computer in the dialog box and click
Properties. There are only 16 (0 to 15) interrupts in a PC system. Make a note of any
interrupt not listed.

Figure 2: Windows 95 IRQ Resources Dialog Box

If you do not have any free interrupts you may need to disable a COM port for an
installed device that you are not currently using, such as COM2.

5

To disable COM2, boot your system and enter your BIOS setup. You can normally
invoke the BIOS setup menu by pressing a key or a combination of keys at the first
boot up screen. Some of the common keys are DELETE, F1, F2, CTRL+ALT+S,
CTRL+ALT+ESC. (Watch the text that appears as you turn your computer on-­there will probably be instructions on how to enter “SETUP”--following these in­structions will give you access to the BIOS. If none of these key combinations work,
refer to your computer’s user’s manual for instructions on how to access the BIOS
setup.

Once inside the BIOS setup, find the menu for “integrated peripherals,” locate the
COM port settings, then disable COM2 or Comport B. Save your settings before
exiting the BIOS Setup. The computer will reboot.

Disable the COM port in Device Manager as well. To do this, right-click the My
Computer icon on the desktop, and choose Properties from the menu that appears.
Click the Device Manager tab. Double-click the Ports (COM & LPT) icon to ex-
pand the list and click Communication Port (COM2) to select it. Click Properties.
Click to select Disable in this hardware profile in Windows 95B and Windows 98,
or click to deselect Original Configuration (current) in Windows 95 or Windows
95A. Restart your system.

Figure 3a: COM2 Properties Dialog Bo x

6

Figure 3b: Windows 95 (or 95A) COM2 Disable Panel

Proceed to the section titled “Installing the Modem.”

For Windows NT 4.0 Installation

Remove all other modem drivers from your operating system. On the Start menu,
click Settings then click Control Panel. In Control Panel, double-click on the Mo-
dems icon. Select the modem you wish to remove and click Remove. Turn off the
computer and physically remove the modem from your system. Do not install your
new modem at this time. Follow the procedures below. Once you remove the old mo-

dem and its drivers from your system, you will need the old modem driver diskette if you
wish to reinstall it at a later date.

On the Start menu, click Programs, then click Administrative Tools, then click
Windows NT Diagnostics. Click the Version tab. “Service Pack 3” (or greater) should

be installed in Windows NT 4.0.

7

Before installing the modem, you must enable ISA Plug-N-Play support within Win­dows NT. First set your system BIOS to “PnP OS” and then insert the Windows NT

4.0 CD-ROM into your systems CD-ROM Drive. The Startup window for Win­dows NT 4.0 should appear after a few moments. Click Browse This CD. Double-
click the Drvlib folder. From the new panel double-click on the Pnpisa folder. An­other panel will appear. Double-click on the x86 folder. The contents of this folder
should contain a file labeled Pnpisa. Right-click the file’s icon and a pop-up menu
will appear. From this menu click Install. After ISA Plug-N-Play is enabled, restart
your system. When the system has restarted, in Control Panel double-click on the
Devices icon. Scroll down the new menu and highlight PnP ISA Enabler Driver.
Click the Startup button and select the System option. See Fig.4 below.

Fig. 4: De vices Window

Proceed to the section titled “Installing the Modem.”

8

Installing The Modem

Always discharge static electricity before handling your modem. You
may discharge static electricity by touching a grounded metal structure
or by using any commercially available grounding strap.

Make sure the expansion slot type is 16-bit, which has two slots to fit the
ISA card. 8-bit slots have only one connector. If you use an 8-bit slot,
the modem will not have access to the higher interrupts (IRQ 9-12).

The position of the expansion slots in your computer may differ from
the illustration shown but the installation procedure should be the same.

Hardware Installation

1. Turn off the computer and all peripheral devices connected to it.

2. Unplug the computer power cord from the wall receptacle.

3. Remove the computer’s cover. Refer to your computer owner’s manual for
instructions.

4. Remove the screw securing the expansion slot cover behind one of the computer’s
available 16-bit ISA expansion slots. Lift the expansion slot cover out as shown
below.

Figure 5: Removing the Bac kplate

9

5. Firmly, but gently, insert the modem into the available 16-bit expansion slot.
Ensure that the card is seated properly before securing it with the screw removed
in Step 4, as shown in the following diagram:

Figure 6: Installing The Modem

6. Put the chassis cover back on the computer.

7. Be sure that all power switches are in the OFF position, then reconnect the
power cables to the computer and its peripherals.

8. Connect the telephone line cable to the “Line (Telco)” jack as shown in Figure

7.

9. Turn on the computer and proceed to the following sections to configure your
modem to the operating system you are using.

10

Connecting Devices To The Modem

Fig.7: Connecting Devices

On the rear panel of your modem are input jacks to connect devices to the modem.
As shown in the diagram, there are jacks for connection to a “phone” and to a phone
“line.” The connector labeled Line (Telco) is meant to be connected to a standard analog

phone line.

To help reduce the load on your phone line, it is recommended that the modem be
the only device connected.

11

Configuring Windows 95

Step 1 Upon startup, Windows 95 detects the modem and displays the New

Hardware Found dialog box. Select “Driver from disk provided by hardware

manufacturer” then click OK.

Step 2 Type your CD-ROM drive’s drive letter into the Copy manufacturer’s files

from box. Insert the Installation CD-ROM and click OK.

Step 3 If Windows asks for an installation disc, click OK and type the drive letter

for you CD-ROM drive in the dialog box that appears and click OK.

12

Step 4 After the installer has copied the .INF files to the hard disk, a New Hardware

Found dialog box should appear prompting for the “Wave Device for Voice

Modem”. Click OK. (See “Do This First” for information on
UNIMODEM.INF if this screen does not appear).

Step 5 Click OK to copy the Wave Device .INF file from the CD-ROM drive to

the hard drive. Windows may request its own installation diskettes for some
files. Insert the Windows CD-ROM as required.

13

Step 6 To determine what COM port and IRQ is assigned to the modem in

Windows 95, click on the Modems icon in Control Panel and select the
Diagnostic tab. Click on the COM Port icon and then on the More Info
button to view the modem properties.

14

Configuring Windows 95 OEM SR2

Step 1 Upon startup, Windows 95 detects the modem and launches the Update

Device Driver Wizard dialog box. Insert the modem’s installation CD-ROM

and click Next.

Step 2 After Windows 95 has found the updated drivers for your modem, click

Finish.

15

Step 3 If Windows asks for its own installation disc, click OK. Insert the requested

CD-ROM, type the drive letter of your CD-ROM in the dialog box that
appears next, and click OK.

Step 4 After the Wizard has copied the .INF files to the hard disk, it should detect

“Wave Device for Voice Modem” and prompt for its driver. Click Next.

.

Step 5 Click Finish to copy the Wave Device .INF file from the CD-ROM drive to

the hard drive. Windows may request its own installation diskettes for some
files. Insert the Windows CD-ROM as required.

16

Step 6 To determine what COM port and IRQ is assigned to the modem in

Windows 95, click on the Modems icon in Control Panel and select the
Diagnostics tab. Select your modem and then click on the More Info button
to view the modem properties.

17

Step 7 Remember this COM port number. When you install your Data/Fax software

or internet browser program, you may need to set your modem port location
to this same number.

18

Configuring Windows 98

Step 1 After installing the modem hardware, turn on your computer. Windows

will detect the modem and start the Add New Hardware Wizard. Click

Next.

Step 2 The Add New Hardware Wizard will ask if you would like it to “search for

the best driver for your device (Recommended).” If this option is not already
selected, click it, then click Next.

19

Step 3 The Wizard will ask where it should search for the drivers. Click “CD-

ROM drive” to select it. Make sure the installation CD-ROM is in the CD­ROM drive. Click Next.

Step 4 Next the Wizard will identify the driver file and report its location on the

CD-ROM drive. Click the Next button to copy and install the driver.

20

Step 5 After copying the files to your hard drive, the wizard will report that it is

finished installing the drivers for the modem. Click Finish.

Step 6 Windows will now detect a “Wave Device for Voice Modem” and start the

Add New Hardware Wizard again to find the drivers for the voice capabilities
of your modem. Click Next.

21

Step 7 The Add New Hardware Wizard will ask if you would like it to “search for

the best driver for your device (Recommended).” If this option is not already
selected, click it, then click Next.

Step 8 The Wizard will ask where it should search for the drivers. Click “CD-

ROM drive” to select it. Make sure the installation CD-ROM is in the CD­ROM drive. Click Next.

22

Step 9 Next the Wizard will identify the driver file and report its location on the

CD-ROM drive. Click the Next button to copy and instal the driver.

Step 10 Windows will copy and install the files, and then display the dialog box

below, reporting that the process has finished. Click Finish.

23

Step 11 Windows will finish loading. To make sure your modem has been installed

correctly, click Start on the taskbar. On the Start menu, click Settings, then
click Control Panel. In Control Panel, double-click the Modems icon, then
click the Properties tab to bring it to the front. On the Modems Properties
tab, click the COM port number (COM 3 in the illustration below) to
select the modem, then click More Info.

24

Step 12 Check that the More Info dialog box that appears on your screen matches

the illustration below. Make a note of the interrupt (also known as an IRQ)
and the port number. These will be needed to configure your
communications software.

Your modem is now installed and configured for use with Windows 98.

25

Configuring Windows NT 4.0

Before installing the modem, make sure you have installed the PnP ISA Enabler and
the latest Service Pack upgrade to Windows NT 4.0. See the section titled “Do This
First” for details.

Step1 Install the modem hardware and turn on your computer. Upon startup,

Windows NT 4.0 detects your modem and displays the New Hardware

Found dialog box.Select “Driver from disk provided by hardware
manufacturer” then click OK.

Note: Windows NT may detect other devices in your computer. If so, select “Do not
install a driver (Windows will not prompt you again)” for these devices.

Step 2 Insert the modems installation CD-ROM and click OK.

26

Step 4 A panel for selecting the device to be installed should appear. Highlight the

“V.90 Windows Modem (LHT)” selection and click OK.

Step 5 If you see the following dialog box, you will need to set the configuration

manually.

27

Step 6 Select the Resource Settings which do not cause any conflicts with other

devices.

Step 7 Restart your computer.

Step 8 Click on the Modems icon in the Control Panel. Verify that Windows NT

has correctly found the modem.

Step 9 If you wish to use your modem to dial into a Windows NT Remote Access

Server or wish to connect to the Internet, you will need to configure Dial­up Networking. If you do not see the Remote Access Setup Panel installation,
In Control Panel double-click the Network icon. Click on the Services folder
and select Remote Access Service. If no Remote Access Service option is
listed click Add. Select Remote Access Service. and click OK. Windows
NT may ask for its own CD-ROM for some files. Insert as required. After
you have installed Remote Access Service add the appropriate protocols as
directed.

28

Step 10 At the Remote Access Setup dialog box, click on Add. Select the Remote

Access Setup device you wish to add and Click OK.

Step 11 Click Continue to finish the installation.

Step 12 After Windows NT has completed the binding process, allow Windows

NT to shut down and restart the computer.

29

Installing and Configuring Communications Software

If your modem came with a communications software package, it is strongly recom­mended that you use this software for your modem. It’s default installation param­eters have been specially configured to work with this modem. The Users Guide for
this program can be found inside the modem package. It can be supplied in either
soft-bound copy or on CD-ROM (depending on the model you purchased). Some
configurations are packaged without communications software. Check your packag­ing to see if communications software is included.

If you wish to use another software package, be sure that it supports this modem.
Most Software Manufacturers have a listing of supported modems on their websites
or BBSs. Check these sites to see if this model is supported. If you are unsure or your
brand of software supports only a few modems, try selecting “Hayes Compatible” or
“Standard Modem.” This may work in certain cases.

Some software programs allow manual input of parameters. For the users of these
programs, here is a listing of the Data/Fax/Voice Command Standards supported.

Data: TIA/EIA-602
Fax: TIA/EIA-578 for Class 1 Fax
Voice: TIA IS-101 support for TAD (Telephone Answering Device)
Init String: AT&F&C1&D2W2

TIA IS-101 Commands not supported:

Caller ID
Full Duplex Speakerphone
VoiceView

Note: some programs must be configured to communicate with the modem on the
same COM port and or IRQ setting used by the modem. See the section titled “In­stalling the Modem” section for instructions on how to determine your COM Port
and IRQ settings.

The Modem’s Voice Features

This modem supports TIA IS-101 commands applicable to a Telephone Answering
Device. In order to take advantage of this feature, you will need a Sound Blaster
compatible sound card equipped with an external microphone and external speakers.
A software application which supports these TAM functions is also required.

A modem based Telephone Answering Machine works by using a sound card equipped
with a microphone to record an outgoing message. This message is stored as a .wav
file which is transferred to the modem by the application program when an incoming

30

®

call is detected. The modem converts the digital information contained in the .wav
file into an audio signal which is then sent over the phone line. The person calling
hears your outgoing message and responds with an incoming message.

The sequence of recording an incoming message is the reverse of an outgoing mes­sage. The modem converts the audio signal into a digital format and sends it to the
application program. The application program then formats and stores the incoming
message as a .wav file. When you play back your stored messages by selecting them
from within the application program, they are sent to the sound card. You then hear
your recorded messages through the sound card’s speakers.

The success of this process is dependent on the ability of the application program to
communicate with both the sound card and the modem. If you wish to use your
modem as a Telephone Answering Machine, experiment with the software witch
came with your modem first. Its default parameters have been specially configured to
identify and use your modems voice capabilities.

31

Troubleshooting

This section lists some common problems and offers suggestions for a solution. It is
important to remember that this modem is a Windows 95/98/NT based modem and
requires 32bit virtual device drivers. It therefore cannot work in Windows 3.1 which
cannot use these drivers. The modem also cannot work in DOS regardless of version.
It is a purely Plug-N-Play device and has no provisions for manual configuration.

If you cannot find your particular symptom listed here, it is suggested that you re­move the modem and its drivers from the system and reinstall them again (see “Un­installing the Modem” later in this section). This provides a new, uncorrupted instal­lation and can cure many temporary problems. Be sure to check the “Do This First”
section for important system preparation before reinstalling the modem.

Most problems encountered during the Windows installation process are a result of
insufficient system resources—no free COM Ports or Interrupts. Problems with Win­dows NT 4.0 installations are usually a result of not having ISA Plug-N-Play en­abled. For these reasons it is strongly recommended that you carefully follow the pre­installation procedures outlined in the Do This First section. These steps have been
thoughtfully chosen to help minimize difficulties during the installation of the mo­dem in both Windows 95, Windows 98, and Windows NT 4.0.

If your modem has installed but is not functioning, try the troubleshooting proce­dure listed below.

Windows 95 and Windo ws 98

Step 1: Check System Resour ces.

In Control Panel double-click the System icon. Click the Device Manager tab. In
the list of devices, double-click the Modems icon to show what modems are in­stalled. If there is no Modems icon, your modem did not install. If your modem is
listed, check that there is no yellow exclamation mark or red “X” over the modem’s
icon (If there is some alteration to this icon, go to Step 2.) If any other modems are
listed, highlight the modem by clicking once on the icon next to the listed modem
and then click Remove. Turn off your computer. Wait 5 seconds and turn your com­puter back on. Repeat Step 1.

Step 2: Check Modem Pr operties.

From the Device Manager tab within System Properties, double-click the Modems
icon in the list of devices to show what modems are installed. Highlight your modem
by clicking once on the icon and then click the Properties button. Read the “Device
Status” under the General tab to see if the device is working properly. Check the

32

Device Usage box and make sure “Disable in this hardware profile” is not selected.
(Windows 95 OEM SR2 and Windows 98 only). Make a note of the COM port and
IRQ the modem is using.

Errors reported in the Device Status box generally refer to conflicts. Click the Re-
sources tab and read the “Conflicting Device List.” If a conflict is present, click to
deselect “Use automatic Setting” and select a configuration that does not cause con­flicts. Manually change the address and IRQ settings if needed. (Refer to Windows
95 on-line help for detailed about how to change these settings.) Click OK. If there
is no setting free of conflicts, turn to the section of this manual titled “Does Not
Install.”

Step 3: Modem Diagnostics.

In Control Panel double-click the Modems icon. Your modem should be listed. If
any other modem is also listed, click to select each of these other modems and then
click the Remove button. Turn off your computer, wait 5 seconds and turn the power
back on. Return to Control Panel and double click the Modems icon. Click the

Diagnostics tab. Click the COM port designation next to your modem. Click More
Info. You should see a dialog box like the one below.

Figure 8: More Info Panel

33

If you receive an error message or the panel is blank, go to the section of this manual
“Does Not Install.”

Step 4: Does Not Install

The most likely reason for a non-installation in Windows 95 or 98 is a lack of IRQ
resources. The modem needs one IRQ and one COM Port in order to function.
Computers are usually equipped with a sound card, CD-ROM drive, Hard-drive,
floppy drive, video card, two COM ports, one LPT port, keyboard, and a mouse.
Each of these devices require at least one IRQ (interrupt) in order to function.

This section deals with the process of freeing IRQs and configuring P-N-P (Plug-N­Play) This requires that you know how to enter your computer system’s BIOS Setup
Routine—read your computer user’s manual for information on how to enter into
and use the BIOS setup.

Once inside the BIOS Setup, find the Plug-N-Play configuration and check the se­lection for “Operating System.” This can be found within the “Advanced”, “PNP/
PCI Configuration”, or “Plug and Play Configuration” section depending on the
BIOS Manufacturer. If you have an Operating System selection, set it to “Plug-N­Play”, or if you have “Plug N Play” settings, set them to “on.” Next, from the infor­mation you noted in Step 2, find the interrupt selection for the IRQ your modem is
using (some BIOS don’t allow individual selection of interrupts to ISA, Plug-N-Play,
or PCI). Set this interrupt to Plug-N-Play. This can be called ICU (ISA Configura­tion Utility), ICU/PCI, ISA, or PNP depending on your BIOS version and manu­facturer. Do not set this interrupt to “PCI” only or to “Legacy ISA”.

If you do not have any free interrupts available, you will have to disable a COM port
currently in use. See the section of this manual titled “Do This First”.

Uninstalling the Modem

If you are uninstalling the modem in Windows in order to upgrade software or rein­stall the modem as part of a troubleshooting process, it is important to follow these
directions carefully. Following these instructions out of sequence can cause your sys­tem to cease responding to the mouse, the keyboard, or both.

1. In Control Panel, double-click the System icon. Click the Device Manager tab.
In the list of device groups, double-click the Modems icon. Click to select the
listing for your modem and then click the Remove button.

2. In Control Panel double-click the Modems icon. If your modem is listed, click
once on the icon next to the modem and then click Remove.. If the New Hardware
Found panel comes up, click Cancel. (Your modem should not be listed in the

34

Modems section after you have deleted it from the Device Manager. If it is, this
could be a sign that your Plug-N-Play settings are not correct. See “Does Not
Install” for information about Plug-N-Play.)

3. Close all open programs and return to the Windows desktop. On the Start menu,
click Find, then click Files or Folders and search for the files listed below. Type
in the name and extension of each and click Find. Once you find each of the
files listed, click the file name to select it then on the File menu choose Delete.
(Do not delete these files from your modem installation diskette. You will need
your diskette to reinstall the modem).

ltcom.vxd ltwave.inf
ltmodem.vxd ltdft.inf
ltvcd.vxd ltdsvd.dll
ltmodem.sys ltports.inf

If you cannot find a particular file, it usually means it was not installed.

Note to users of Windows 95 and 98

If you are using Windows 95 or 98, there are two additional files which may be
generateed when installing a piece of hardware from an OEM. The file is called
oem#.inf. The number (#) used is generated by Windows 95 each time an additional
piece of hardware is installed. In the case of the modem, these files wil have numbers
between 1 and 99 reflected in the filename--”oem8.inf”, for example

On the Start menu, click Find then click Files or Folders. At the first screen, type in

*.inf in the Named: box. Make sure your entire drive is selected. Click to select
Include subfolders box. Be sure all the information is typed in as shown below.

Before beginning the search, select the Advanced tab.

35

At the Advanced settings window, type the following in the “Containing text” field:
LT Win Modem. Click Find Now.

When a file is found, it will have the name “oem#.inf.” Delete only an oem inf file.
To delete a file, highlight the file name by clicking once and then choose Delete from
the File menu. After the file is deleted, you now need to find the other inf file. Go to
the Advanced tab and type “LT_Win_Modem” in the “Containing text” field:

After Windows finds the other file, delete it as before. Restart your system and follow
the installation procedures in the section of this manual titled “Installing the Mo­dem.”

Note to users of Windows NT

Windows NT 4.0 installation problems are often due to inadequate preparation.
The following conditions must be meet before attempting to install the modem or it
will not be seen or correctly installed by the system. (See the “Do This First” at the
beginning of this manual).

• ISA Plug-N-Play support must be installed within Windows NT.

• Plug-N-Play OS must be enabled in your system BIOS.

• You must have the latest Service Pack upgrade installed.

• There must be a free IRQ and COM Port available for the modem.

If you need help on freeing an interrupt, see “Windows 95 Does Not Install” for a
discussion of this topic. The “Special Situations” and “Plug-N-Play BIOS” sections
also apply to Windows NT 4.0. Do not use the procedure in Windows 95 for unin­stalling the modem.

36

Common Problems

No Dialtone Error

Make sure you have connected the phone cable into the right connector on the back
of the modem. See “Figure 7: Connecting Devices.”

You may have too many devices connected to the phone line. Remove all other equip­ment.

Your modem may not recognize overseas dialtone. Use the AT command string “ATX0”
to have the modem ignore the dialtone before dialing.

Communications Software Does Not Work

The communications software must be configured to the same COM Port and IRQ
as the modem.

Does the communications software support this modem? See “Installing and Config­uring Communications Software.”

If you are using different communications software from that supplied with the mo­dem, try installing the supplied software first to verify its functionality.

Nothing Appears On The Screen When I Type

Issue the command ATE1 to the modem to enable command echo. This will let you
see what you type.

Cannot Connect at 56K

Note: Current FCC regulations limit your maximum connection rate to 53Kbits/s.

The number you are calling may not support V.90 or K56flex protocols. Some Inter­net Service Providers have special numbers that you must call to make 56K connec­tions. Contact your service provider and ask if the number you are using supports
V.90 or K56flex.

Check the maximum speed setting in the Modem Properties window. In Control
Panel, double-click the Modems icon. Highlight your modem by clicking once on
the icon next to the modem and then click the Properties button. Select the General
tab and look at the setting in the Maximum speed box. Make sure this is set to 115200.

You may have other telephone devices connected to the phone line. To achieve the
best connection possible, remove all extra devices connected to the telephone line

37

when the modem is in use. This includes extension phones, answering machines,
cordless phone bases, caller ID boxes and their cables. This reduces the load on your
phone line and keeps signal attenuation to a minimum.

Keep the length of your phone line cable to 10 feet or less. If necessary, move the
computer closer to the phone socket. Don’t lay your cabling close to an electrical
appliance like a refrigerator or air conditioner unit. High current devices can trans­mit 60 cycle “hum” to your modem through the phone cord. This may cause fre­quent renegotiations or line disconnects while the appliance is running.

The telephone line conditions at the time of your call may not let you connect at
56K. The modem has a connection sequence of K56flex, then V.90, then V.34, and
so on. The modem attempts to make the highest connect rate that your telephone
line can support at the time of negotiation. If the line conditions (noise, telephone
company routing, etc.) won’t allow a high data rate connection, then the modem will
automatically connect at the most reliable rate. Try making the call again after a few
minutes. The routing of the call may improve your chances of making a 56K connec­tion.

If you are attempting to make a call from an office and you have to dial “9” to reach
an outside number, you are using a PBX. The modem cannot connect faster then
V.34 if you are using a PBX. Try using the line that is connected to a fax machine. Fax
machines are usually connected to a dedicated line and not a PBX.

Your phone line may not support or may only intermittently support a 56K connec­tion. There are many conditions that must be met before a 56K connection can be
established. The telephone company must have you connected to the (Public Switched
Telephone Network) in a particular way. The modem you are calling must also sup­port the same protocol.

The drivers for your modem are constantly being refined to address problems with
compatibility, interoperability, and performance. Conditions that were thought in­surmountable only months ago are now things of the past. As the industry converts
to the new V.90 standard, current problems of connectivity and interoperability could
also be things of the past. Check for driver upgrades on a regular basis. A problem
connecting to a particular provider might be fixed by a simple software upgrade.

38

Appendix A: AT Command Set

AT Commands

AT commands are issued to the modem to control the modem’s operation and soft­ware configuration. AT commands can only be entered while the modem is in com­mand mode. Enter AT commands by typing:

ATXn

where X is the AT command, and n is the specific value for that command. Press
ENTER.

Any command issued is acknowledged with a response in either text or numeric
values known as result codes. To issue multiple AT commands on the same command
line, the commands are executed in the order they are received. Should execution of
a command result in an error, or a character not be recognized as a valid command,
execution is terminated, the remainder of the command line is ignored, and the
ERROR result code is issued. Otherwise, if all commands execute correctly, only the
result code associated with the last command shall be issued; result codes for preced­ing commands are suppressed.

In the following listing all commands and command values accepted by the modem
are shown. Any entries other than those shown cause the ERROR result code.

+++ Escape sequence

The escape sequence allows the modem to exit data mode and enter on-line com­mand mode. While in on-line command mode, you may communicate directly to
your modem using AT commands. Once you are finished, you may return to data
mode using the ATO command. A pause, the length of which is set by the Escape
Guard Time S-Register (S12), must be used after an escape sequence is issued. This
pause prevents the modem from interpreting the escape sequence as data. The value
of the escape sequence character may be changed using Register S2.

A/ Repeat Last Command

This command repeats the last command string entered. Do not precede this com­mand with an AT prefix or conclude it by pressing Enter.

A Answer Command

This command instructs the modem to go off-hook and answer an incoming call.

39

Bn Communication Standard Setting

This command determines CCITT vs. Bell standard.

dnammoCtceffE

0B

1B

2B.)3Bsaemas(lennahcesrever32VstcelesnU

3B.)2Bsaemas(lennahcesrever32VstcelesnU

51B.s/stib003tasimedomehtnehw12.VstceleS

.s/stib

.)tluafed(

0021tasimedomehtnehwedom22.VTTICCstceleS

s/stib0021tasimedomehtnehwA212lleBstceleS

61B

.)tluafed(

s/stib003tasimedomehtnehwJ301lleBstceleS

Result Codes:

KO61,51,1,0=n

RORREesiwrehtO

Cn Carrier Control

The modem will accept the C1 command without error in order to ensure backward
compatibility with communications software that issues the C1 command. However,
this modem does not support the C0 command. The C0 command may instruct
some other modems to not send carrier (i.e., it puts them in a receive-only mode).

dnammoCtceffE

0C.ffosyawlareirractimsnarT

1C.gnihctiwsreirractimsnartlamroN

Result Codes:

KO1=n

RORREesiwrehtO

40

Dn Dial

This command instructs the modem to begin the dialing sequence. The dial string
(n, including modifiers and the telephone number) is entered after the ATD com­mand.

A dial string can be up to 40 characters long. Any digit or symbol (0-9, *, #, A, B, C,
D) may be dialed as touch-tone digits. Characters such as spaces, hyphens, and pa­rentheses do not count, they are ignored by the modem and may be included in the
dial string to enhance readability.

The following characters may be used as dial string modifiers:

gniwollofretcarahctsrifehtebdluohS.rebmuntsalslaideR

L

.delaidrebmuntsal

P).tluafedsaeslupottesgnilaiD.xxxPDTA.g.e(.gnilaidesluP

gnirtsgnilaidehtsyalpsidmedomehT.esiwrehtoderongi,DTA
ehtsixxxxxxxerehwxxxxxxxgnilaiD:tamrofgniwollofehtni

T

,

W

@

!

;

^.noissimsnartenotgnillacatadelbasiD

n=S

$.noitcetedenotgnoB

).tluafedsa

enotottesgnilaiD.xxxTDTA.g.e(.)tluafed(gnilaidenot-hcuoT

8SretsigeRnideificepsemitrofesuaP.gnilaidgnirudesuaP

.gnirtslaidehtniretcarahctxenehtgnissecorperofeb

erofebenotlaiddnocesarofstiawmedoM.enotlaidroftiaW

.gnirtslaidehtgnissecorp

retfaecnelisfosdnocesevifroftiaW.rewsnateiuqroftiaW

sdnesmedomeht,detcetedtonsiecnelisfI.rebmunehtgnilaid

.resuehtotkcabedoctluserREWSNAONa

sdnoces5.0rofkooh-noogotmedomehtsesuaC.hsalfkooH

.kooh-ffootnruternehtdna

otnruterotmedomehtsesuaC.edomdnammocotnruteR

gnitcennocsidtuohtiw,rebmunehtgnilaidretfaedomdnammoc

.llaceht

x=nZ&ehtgnisuderotsylsuoiverprebmunenohpeletalaiD

.)noitamrofnirehtrufrofdnammocx=nZ&ehtees(dnammoc

.3-0sinfoegnarehT

41

En Echo Command

This command controls whether or not the characters entered from your computer
keyboard are echoed back to your monitor while the modem is in command mode.

dnammoCtceffE

0E.retupmocehtotohceselbasiD

1E.)tluafed(retupmocehtotohceselbanE

Result Codes:

KO1,0=n

RORREesiwrehtO

Fn Online Data Character Echo Command

This command determines if the modem will echo data from the DTE. This modem
does not support the F0 version of the command. However, the modem will accept
F1, which may be issued by older communication software, to assure backward com­patibility.

dnammoCtceffE

0F

1F.delbasidohceretcarahcenilnO

.)RORREnruterlliw

,detroppustoN(delbaneohceretcarahcatadenilnO

Result Codes:

KO1=n

RORREesiwrehtO

Hn Hook Control

This command instructs the modem to go on-hook to disconnect a call, or off-hook
to make the phone line busy.

dnammoCtceffE

0H.)tluafed(kooh-noseogmedoM

1H.kooh-ffoseogmedoM

42

Result Codes:

KO1,0=n

RORREesiwrehtO

In Request ID Information

This command displays specific product information about the modem.

dnammoCtceffE

OI

1I

2I

3I

4I.)49,.g.e(pmupatadrofnoisreverawmrifsnruteR

5I

6IKOesnopseR

7IKOesnopseR

8IKOesnopseR

9I.)1.reVaciremAhtroN,.g.e(edocyrtnuocsnruteR

)3Isaemas(

.)BA21,.g.e(

.RORREroKOgniyalpsidmuskcehc

)0Isaemas(.noisrev

.DIyrtnuocdna,noisrev

.noisreverawmrifrellortnocdnadeepstluafedsnruteR

ETDehtnotisyalpsiddnamuskcehcMORsetaluclaC

ehtseifirevdnasetaluclacdnakcehcMORasmrofreP

erawmrifrellortnocehtdnadeepstluafedehtsnruteR

erawdrah,noisreverawtfos;DIdraobehtsnruteR

Result Codes:

KO9-0=n

RORREesiwrehtO

Ln Monitor Speaker Volume

This command sets speaker volume to low, medium, or high.

dnammoCtceffE

0L.emulovtsewolstceleS

1L.emulovwolstceleS

2L.)tluafed(emulovmuidemstceleS

3L.emulovhgihstceleS

43

Result Codes:

KO3,2,1,0=n

RORREesiwrehtO

Mn Monitor Speaker Mode

This command turns the speaker on or off.

dnammoCtceffE

0M.ffosirekaepsehT

1M

2M.kooh-ffosimedomnehwnosyawlasirekaepsehT

3M

.)tluafed(langis

.gnilaidelihw

Result Codes:

KO3,2,1,0=n

RORREesiwrehtO

reirracehtstcetedmedomehtlitnunosirekaepsehT

tpecxe,detcetedsireirracehtlitnunosirekaepsehT

Nn Modulation Handshake

This command controls whether or not the local modem performs a negotiated hand­shake at connection time with the remote modem when the communication speed of
the two modems is different.

dnammoCtceffE

0N

.dnammocBTAehtdna

1N

.)tluafed(ruccoyamdeepsrewol

ekahsdnahrofsisiht,gnirewsnarognitanigironehW

73Sybdeificepsdradnatsnoitacinummocehttaylno

ekahsdnahehtnigeb,gnirewsnarognitanigironehW
73Sybdeificepsdradnatsnoitacinummocehttaylno

aotkcabllaf,ekahsdnahgniruD.dnammocBTAehtdna

Result Codes:

KO1,0=n

RORREesiwrehtO

44

On Return On-line to Data Mode

dnammoCtceffE

0O

1O

3O

.edomatadenil

.edomatadenilnootgninruter

dnaedomdnammocenil-notixeotmedomehtstcurtsnI

.)+++,ecneuqeSepacsETAees(edomatadotnruter

-nootgninrutererofebniarteraseussidnammocsihT

erofebnoitaitogeneretaraseussidnammocsihT

Result Codes:

KO3,1,0=n

RORREesiwrehtO

P Select Pulse Dialing

This command configures the modem for pulse (non-touch-tone) dialing. Dialed
digits are pulsed until a T command or dial modifier is received. Tone dial is the
default setting.

Qn Result Code Control

Result codes are informational messages sent from the modem and displayed on your
monitor. Basic result codes are OK, CONNECT, RING, NO CARRIER, and ER­ROR. The ATQ command allows the user to turn result codes on or off.

dnammoCtceffE

0Q

1Q

.)tluafed(

.retupmoc

retupmocehtotsedoctluserdnesotmedomselbanE

ehtotsedoctlusergnidnesmorfmedomselbasiD

Result Codes:

KO1,0=n

RORREesiwrehtO

T Select Tone Dialing

This command instructs the modem to send DTMF tones while dialing. Dialed
digits are tone dialed until a P command or dial modifier is received. This is the
default setting.

45

Vn DCE Response Format

This command controls whether result codes (including call progress and negotia­tion progress messages) are displayed as words or their numeric equivalents.

dnammoCtceffE

0V.txetsyawlaerastluseR.detroppustoN

1V.)tluafed(txetsasedoctlusersyalpsiD

Result Codes:

KO1,0=n

RORREesiwrehtO

Wn Result Code Option

dnammoCtceffE

0W

1W

2W

.sedoctluserlocotorp

.sedoctluserlocotorp

.)tluafed(sedoctluserlocotorp

elbasiD.deepsETDstroperedoctluserTCENNOC

elbanE.deepsETDstroperedoctluserTCENNOC

elbanE.deepsECDstroperedoctluserTCENNOC

Result Codes:

KO2,1,0=n

RORREesiwrehtO

46

Xn Result Code Selection and Call Progress Monitoring

This command enables tone detection options used in the dialing process. As these
functions are chosen, the result codes are also affected. Therefore, this command is
frequently used to control the modem chipset’s responses. The primary function of
this control is to control the modem chip set’s call response capabilities.

dnammoCedoCtluseRtceteDenoTlaiDtceteDenoTysuB

0XelbasiDelbasiDelbasiD

1XelbanEelbasiDelbasiD

2XelbanEelbanEelbasiD

3XelbanEelbasiDelbanE

4XelbanEelbanE)tluafed(elbanE

5XelbanEelbanEelbanE

6XelbanEelbanEelbanE

7XelbasiDelbanEelbanE

Extended Result Codes

dednetxE

sedoCtluseR

delbasiD

delbanE

Dial Tone Detect

enoTlaiD

tceteD

delbasiD

delbanE

tceffE

,TCENNOC,KOsedoctlusercisabehtylnosyalpsiD

.RORREdna,REIRRACON,GNIR

tcennocehthtiwgnola,sedoctlusercisabsyalpsiD

nadna,etaratadsmedomehtdnaegassem

ataddnanoitcerrocrorresmedomehtfonoitacidni

.noitareponoisserpmoc

tceffE

stcetedtirehtehwfosseldragerllacaslaidmedomehT

erofebstiawmedomehtemitfodoirepehT.enotlaida

.6Sretsigernideificepssignilaid

,enotlaidafonoitcetednopuylnoslaidmedomehT

detcetedtonsienotlaidehtfillacehtstcennocsiddna

.sdnoces01nihtiw

47

Busy Tone Detect

enoTysuB

tceteD

delbasiD.seviecertisenotysubynaserongimedomehT

delbanE.senotysubrofsrotinommedomehT

tceffE

Result Codes:

KO

RORREesiwrehtO

,2,1,0=n
7,6,5,4,3

Yn Long Space Disconnect

Long space disconnect is always disabled.

dnammoCtceffE

0Y.)tluafed(tcennocsidecapsgnolelbasiD

1Y).detroppustoN(.tcennocsidecapsgnolelbanE

Result Codes:

KO0=n

RORREesiwrehtO

Zn Recall Stored Profile

This command instructs the modem chip set to go on-hook and restore the profile
saved by the last &W command. Either Z0 or Z1 restores the same single profile.

Result Codes:

KO1,0=n

RORREesiwrehtO

&Bn V.32 Auto Retrain

This modem always auto retrains.

dnammoCtceffE

0B&).detroppustoN(niarterotua23.VelbasiD

1B&.)tluafed(niarterotua23.VelbanE

48

Result Codes:

KO1=n

RORREesiwrehtO

&Cn Data Carrier Detect (DCD) Control

Data Carrier Detect is a signal from the modem to your computer indicating that the
carrier signal is being received from a remote modem. DCD normally turns off when
the modem no longer detects the carrier signal.

dnammoCtceffE

0C&

1C&

.)tluafed(detceted

.nosyawlasitiucricDCD.derongi

simedometomerehtmorfreirracehtfoetatsehT

langisreirracsmedometomerehtnehwnosnrutDCD

tonsilangisreirracehtnehwffodna,detcetedsi

Result Codes:

KO1,0=n

RORREesiwrehtO

&Dn DTR Control

This command interprets how the modem responds to the state of the DTR signal
and changes to the DTR signal.

dnammoCtceffE

0D&

1D&

.detcennocsniamerdna,edoctluser

2D&

3D&

.deviecersawdnammoc

dnaRTDfosutatseurtehtserongimedomehT.erongI
ruoyfidesuebylnodluohssihT.nosyawlasatistaert

.medomehtotRTDedivorptonseodretupmoc

atadenil-nonielihwdetcetedtonsilangisRTDehtfI

KOseussi,edomdnammocsretnemedomeht,edom

atadenil-nonielihwdetcetedtonsilangisRTDehtfI

silangissihtfI.)tluafed(stcennocsidmedomeht,edom

.laidrorewsnatonlliwmedomeht,tneserpton

,srucconoitisnartffo-ot-nonanehwlangisRTDrotinoM

ZTAehtfisatesertfosasmrofrepmedomeht

Result Codes:

KO

3

RORREesiwrehtO

,2,1,0=n

49

&Fn Load Factory Settings

This command loads the configuration stored and programmed at the factory. This
operation replaces all of the command options and the S-register settings in the ac­tive configuration with factory values.

dnammoCtceffE

0F&)tluafed(.noitarugifnocevitcasagnittesyrotcafllaceR

&Gn V.22bis Guard Tone Control

This command determines which guard tone, if any, to transmit while transmitting
in the high band (answer mode). This command is only used in V.22 and V.22bis
mode. This option is not used in North America and is for international use only.

dnammoCtceffE

0G&.)tluafed(delbasidenotdrauG

1G&.zH055otenotdraugsteS

2G&.zH0081otenotdraugsteS

Result Codes:

KO2,1,0=n

RORREesiwrehtO

&Jn Auxiliary Relay option

dnammoCtceffE

0J&.desolcrevensiyaleryrailixuaehT

1J&.RORREsdnopser,DETROPPUSTON

Result Codes:

KO0=n

RORREesiwrehtO

50

&Kn Local Flow Control Selection

dnammoCtceffE

0K&.lortnocwolfelbasiD

1K&.devreseR

2K&.devreseR

3K&.)tluafed(lortnocwolfSTC/STRelbanE

4K&.lortnocwolfFFOX/NOXelbanE

Result Codes:

KO4,3,0=n

RORREesiwrehtO

&Mn Asynchronous Communications Mode

dnammoCtceffE

0M&.)tluafed(edomsuonorhcnysA

1M&.devreseR

2M&.devreseR

3M&.devreseR

4M&.devreseR

Result Codes:

KO0=n

RORREesiwrehtO

&Pn Pulse Dial Make-to-Break Ratio Selection

This Command is effective only for use in Japan.

dnammoCtceffE

0P&SPP01,oitarkaerb/ekam16/93

IP&)tluafed(SPP01,oitarkaerb/ekam76/33

2P&SPP02,oitarkaerb/ekam76/33

Result Codes:

KO2,1,0=n

RORREesiwrehtO

51

&Qn Asynchronous Communications Mode

dnammoCtceffE

0Q&.0N\saemaS.dereffub,edoMsuonorhcnysA

1Q&.devreseR

2Q&.devreseR

3Q&.devreseR

4Q&.devreseR

5Q&.3N\saemaS.)tluafed(dereffub,edoMlortnoCrorrE

6Q&.0N\saemaS.dereffub,edoMsuonorhcnysA

7Q&.devreseR

8Q&

9Q&

Result Codes:

lortnocrorrePNMnafI.edomlortnocrorrePNM

kcabllaflliwmedomeht,dehsilbatsetonsilocotorp

.63Snignittesresutnerrucehtotgnidrocca

lortnocrorrerehtienfI.edomlortnocrorrePNMro24.V

kcabllaflliwmedomeht,dehsilbatsesilocotorp

.63Snignittesresutnerrucehtotgnidrocca

KO

RORREesiwrehtO

,6,5,0=n

9,8

&Sn Data Set Ready (DSR) Option

This command selects DSR action.

dnammoCtceffE

0S&.)tluafed(NOsyawlaRSD

1S&

Result Codes:

KO1,0=n

RORREesiwrehtO

52

.sdnenoitcennocehtnehwffoseog

dnanoitcennocagnihsilbatsenehwnosemocRSD

&V0 View Active Configuration and Stored Profile

This command is used to display the active profiles.

dnammoCtceffE

0V&elifevitcaweiV

Below is an example of a possible output:

Option Selection AT Cmd

Comm Standard Bell B
CommandCharEcho Enable E
Speaker Volume Medium L
Speaker Control OnUntilCarrier M
Result Codes Enable Q
Dialer Type Tone T/P
ResultCode Form Text V
ExtendResultCode Enabled X
DialTone Detect Enable X
BusyTone Detect Enable X
LSD Action Standard RS232 &C
DTR Action Standard RS232 &D

Press any key to continue; ESC to quit.

Option Selection AT Cmd

V22b Guard Tone Disable &G
Flow Control Hardware &K
Error Control Mode V42, MNP, Buffer \N
Data Compression V42bis/MNP5 %C
AutoAnswerRing# 0 S0
AT Escape Char 43 S2
CarriageReturn Char 13 S3
Linefeed Char 10 S4
Backspace Char 8 S5
Blind Dial Pause 2 sec S6
NoAnswer Timeout 50 sec S7
“,“ Pause Time 2 sec S8

Press any key to continue; ESC to quit.

53

Option Selection AT Cmd

No Carrier Disc 2000 msec S10
DTMF Dial Speed 95 msec S11
Escape GuardTime 1000 msec S12
Data Calling Tone Disabled S35
Line Rate 33600 S37
DSVD mode Disabled -SSE

Stored Phone Numbers

&Z0=
&Z1=
&Z2=
&Z3=

OK

&Wn Store Current Configuration

This command stores certain command options and S-register values into the modem’s
nonvolatile memory. The ATZ command or a powerup reset of the modem restores
this profile.

Result Codes:

KO0=n

RORREesiwrehtO

&Yn Select Stored Profile for Hard Reset

This command does not change the behavior of the modem but is included for com­patibility with applications that issue the &Y0 command:

dnammoCtceffE

0Y&purewopno0eliforpderotstceleS

1Y&RORRE

Result Codes:

KO0=n

RORREesiwrehtO

54

&Zn=x Store Telephone Number

This command is used to store up to four dialing strings in the modem’s nonvolatile
memory for later dialing. The format for the command is &Zn = ”stored number”
where n is the location 0?3 to which the number should be written. The dial string
may contain up to 40 characters. The ATDS = n command dials using the string
stored in location n.

Result Codes:

KO3,2,1,0=n

RORREesiwrehtO

\An Select Maximum MNP Block Size

The modem will operate an MNP error corrected link using a maximum block size
controlled by the parameter supplied.

dnammoCtceffE

OA\sretcarahc46

1A\sretcarahc821

2A\sretcarahc291

3A\)tluafeD(sretcarahc652

Result Codes:

KO3,2,1,0=n

RORREesiwrehtO

\Bn Transmit Break to Remote

In non-error correction mode, the modem will transmit a break signal to the remote
modem with a length in multiples of 100ms according to parameter specified. The
command works in conjunction with the \K command.

dnammoCtceffE

9B\-1B\

).ylnoedomdetcerroc

rorre-noN().3=tluafeD(.stinusm001nihtgnelkaerB

Result Codes:

KO.edommedomatadnidetcennocfI

REIRRACON.edommedomxafnidetcennocrodetcennoctonfI

55

\G Modem Port Flow Control

dnammoCtceffE

0G\.)tluafed(ytilibitapmocrofKOnasnruteR

1G\.RORREsdnopserDETROPPUSTON

Result Codes:

KO0=n

RORREesiwrehtO

\J Adjust Bits/s Rate Control

When this feature is enabled, the modem emulates the behavior of modems that
force the DTE interface to the line speed.

dnammoCtceffE

0J\.)tluafed(erutaefffonruT

1J\.erutaefnonruT

Result Codes:

KO1,0=n

RORREesiwrehtO

\Kn Break Control

Controls the response of the modem to a break received from the DTE or the remote
modem or the \B command. The response is different in three separate states. The
first state is where the modem receives a break from the DTE when the modem is
operating in data transfer mode:

dnammoCtceffE

0K\

1K\.medometomerotkaerbdnesdnasreffubatadraelC

2K\.0saemaS

3K\.yletaidemmimedometomerotkaerbdneS

4K\.0saemaS

5K\

.medometomer

).tluafeD(.ataddettimsnart

ehtottneskaerbon,edomdnammocenil-noretnE

htiwecneuqesnimedometomerotkaerbdneS

56

The second case is where the modem is in the on-line command state (waiting for AT
commands) during a data connection, and the \B is received in order to send a break
to the remote modem:

dnammoCtceffE

0K\.medometomerotkaerbdnesdnasreffubatadraelC

1K\

2K\.yletaidemmimedometomerotkaerbdneS

3K\

4K\.atadhtiwecneuqesnimedometomerotkaerbdneS

5K\

).0saemaS(

).2

)tluafeD().4saemaS(

.medometomerotkaerbdnesdnasreffubatadraelC

saemaS(.yletaidemmimedometomerotkaerbdneS

.atadhtiwecneuqesnimedometomerotkaerbdneS

The third case is where a break is received from a remote modem during a connec­tion:

dnammoCtceffE

0K\.ETDehtotkaerbdnesdnasreffubatadraelC

1K\

2K\.ETDotyletaidemmikaerbadneS

3K\).2saemaS(.ETDotyletaidemmikaerbadneS

4K\.ETDotataddeviecerhtiwecneuqesnikaerbadneS

5K\

).0sa

)tluafeD().4saemaS(

emaS(.ETDehtotkaerbdnesdnasreffubatadraelC

.ETDotataddeviecerhtiwecneuqesnikaerbadneS

Result Codes:

KO

5

,4,3,2,1,0=n

RORREesiwrehtO

57

\Nn Error Control Mode Selection

This command determines the type of error control used by the modem when send­ing or receiving data.

dnammoCtceffE

0N\.)6Q&saemas(lortnocrorreoN.edomreffuB

1N\.edomtceriD

otstpmettamedomehT.edomtcennocsidroPNM

2N\

.edomelbailer

3N\

.)5Q&saemas(edomelbailer

4N\

.detcennocsid

5N\)3N\saemas(reffubroPNM24.V

7N\.)3N\saemas(reffubroPNM.24.V

,sliafsihtfI.erudecorplortnocrorre4-2PNMnitcennoc

PNMsanwonkoslasisihT.stcennocsidmedomeht

otstpmettamedomehT.)tluafed(reffubro,PNM,24.V

eht,sliafsihtfI.edomlortnocrorre24.Vnitcennoc

,sliafsihtfI.edomPNMnitcennocotstpmettamedom

seunitnocdnaedomreffubnistcennocmedomeht

otuaPNM/24.VsanwonkoslasisihT.noitarepo

nitcennocotstpmettamedomehT.tcennocsidro24.V

eblliwllaceht,sliafsihtfI.edomlortnocrorre24.V

Result Codes:

KO7,5,4,3,2,1,0=n

RORREesiwrehtO

\Q Local Flow Control Selection

dnammoCtceffE

0Q\.0K&saemaS.lortnocwolfelbasiD

1Q\.4K&saemaS.lortnocwolferawtfosFFOX/NOX

2Q\

3Q\.3K&saemaS.)tluafed(ETDotSTC/STR

.RORREsiesnopser

58

ehtdna,detroppustonsisihT.lortnocwolfylno-STC

Result Codes:

KO3,1,0=n

RORREesiwrehtO

\Rn Ring indicator signal off after the telephone call is answered

(Compatibility command)

dnammoCtceffE

0R\

derewsna

sillacenohpeletehtretfaffosilangisrotacidnigniR

Result Codes:

KO0=n

RORREesiwrehtO

\Tn Inactivity Timer

This command specifies the length of time (in minutes) that the modem will wait
before disconnecting when no data is sent or received. A setting of zero disables the
timer. Alternatively, this timer may be specified in register S30. This function is only
applicable to buffer mode.

Result Codes:

KO552-0=n

RORREesiwrehtO

\Vn Protocol Result Code

dnammoCtceffE

0V\edoctluserlocotorpelbasiD

1V\edoctluserlocotorpelbanE

2V\edoctluserlocotorpelbanE

59

Result Codes:

KO2,1,0=n

RORREesiwrehtO

\Xn XON/XOFF Pass Through

dnammoCtceffE

0X\

1X\

)tluafed(yllacol

sretcarahc

sretcarahclortnocwolfFFOX/NOXsessecorpmedoM

lortnocwolfFFOX/NOXssapdnasessecorpmedoM

Result Codes:

KO1,0=n

RORREesiwrehtO

-Cn Data Calling Tone

Data Calling Tone is a tone of certain frequency and cadence as specified in V.25
which allows remote Data/FAX/Voice discrimination. The frequency is 1300 Hz
with a cadence of .5 s on and 2 s off.

Result Codes:

KO1,0=n

dnammoCtceffE

0X\

1X\

RORREesiwrehtO

)tluafed(yllacol

sretcarahc

sretcarahclortnocwolfFFOX/NOXsessecorpmedoM

lortnocwolfFFOX/NOXssapdnasessecorpmedoM

60

-V90=x V.90 Downstream Rate and Control

Use this command to enable/disable V.90 connection and to control V.90 connec­tion rates. The command syntax is AT-V90=x. Where x is a value from the list
below.

n=09V-TAetaRmaertsnwoD

0delbasid09.V

1)tluafed(etaRotuA

2s/stib00082

3s/stib33392

4s/stib66603

5s/stib00023

6s/stib33333

7s/stib66643

8s/stib00063

9s/stib33373

01s/stib66683

11s/stib00004

21s/stib33314

31s/stib66624

41s/stib00044

51s/stib33354

61s/stib66664

71s/stib00084

81s/stib33394

91s/stib66605

02s/stib00025

12s/stib33335

?09V-TA.etardetcelesehtsyalpsiddnaeulavtnerrucehtswohs

?=09V-TA)12-0(egnarehtwohs

%B View Numbers in Blacklist

If blacklisting is in effect, this command displays the numbers for which the last call
attempted in the past two hours failed. The ERROR result code appears in countries
that do not require blacklisting.

61

%Cn Enable/Disable Data Compression

Enables or disables data compression negotiation on an error corrected link.

dnammoCtceffE

0C%noisserpmocatadselbasiD

1C%noisserpmocatad5PNMdnasib24.VhtobselbanE

Result Codes:

KO1,0=n

RORREesiwrehtO

AT Commands for Testing and Deb ugging

The following commands are to be used for testing and debugging only and are not
meant for general use.

&&C Write to/Read from DSP Register

dnammoCtceffE

->col<C&&TA

>lav<,

>col<C&&TA.>col<noitacolmorfsdaer

.>col<noitacoltaretsigerPSDot>lav<eulavehtsetirw

&&L Line-to-Line Loopback

This command provides a loopback for line-to-line.

&&R Write to/Read from DSP RAM Location

dnammoCtceffE

-,>col<R&&TA

>lav<

>col<R&&TA>col<noitacolmorfsdaer

62

>col<noitacolMARPSDot>lav<eulavehtsetirw

&Tn Self-Test Commands

This command allows the user to perform diagnostic tests on the modem. These tests
can help to isolate problems when experiencing periodic data loss or random errors.

dnammoCtceffE

0T&.ssergorpnitsetynaspotS.trobA

,noitarepomedomseifirevtsetsihT.poolgolanalacoL

1T&

3T&.tsetkcabpoollatigidlacoL

6T&

.delbasidlortnocrorre

dnamedomehtneewtebnoitcennocehtsallewsa

siETDlacolehttaderetneatadynA.retupmoc

lacolehtotdenruterdna,detaludomedneht,detaludom

.enil-ffoebtsummedomeht,ylreporpkrowoT.ETD

ehtyfirevnactsetsihT.tsetkcabpoollatigidetomeR

,knilsnoitacinummoceht,medomlacolehtfoytirgetni

lacolehttaderetneatadynA.medometomerehtdna

.medometomereht,morfdenruterdna,ottnessiETD

htiwenil-noebtsumsmedomeht,ylreporpkrowoT

Result Codes:

KO0=n

TCENNOC6,3,1=n

RORREesiwrehtO

ATI11 Display Diagnostic Information for the last modem connection

The “ATI11” command displays the following diagnostic information for the last
modem connection. A value of “NA” will be displayed if that parameter is not appli­cable for that connection.

Description Example Comments

Last Connection V.34 56K/V.34/V.32 - The last

data connection is successful.
Failure-the last data connec­tion failed.

Initial Transmit Carrier Rate 33600 The upload connection rate

after initial negotiation.

63

Description Example Comments

Initial Receive Carrier Rate 33600 The download connection

rate after initial negotiation.

Final Transmit Carrier Rate 33600 The last upload connection

rate.

Final Receive Carrier Rate 33600 The last download connec-

tion rate.

Protocol Negotiation Result V.42 Possible results are: V.42,

MNP or noEC

Data Compression Result V.42bis Possible results are: V.42bis,

MNP5 or no Compression.

Estimated Noise Level 10 An average of the squared

error between the received
constellation point and the
decision point.

Receive Signal Power Level 20 Receive signal (-dBm)

Transmit Signal Power Level 10 Transmit signal level ( –

dBm)

Round Trip Delay (msec) 60 Measured Round Trip Delay

in milliseconds

Near Echo Level (-dBm) 39 Measured Near Echo Level

Far Echo Level (-dBm) 60 Measured Far Echo Level

Transmit Frame Count 5000 Number of HDLC frames

transmitted.

Transmit Frame Error Count 10 Number of frame errors

transmitted

Receive Frame Count 5000 Number of HDLC frames

received.

Receive Frame Error Count 10 Number of frame errors re-

ceived

Retrain and Rate Negotiate Event 1 Number of retrains initiated

by the local modem.

Retrain and Rate Negotiate Event 1 Number of retrains initiated

by the by remote modem.

64

Description Example Comments

Call Termination Cause 0 0 -Call Terminated by Local

modem 1 -Call Terminated
by Remote modem 2 -No
Answer - the Remote mo­dem did not answer 3 -Train­ing Failure - the modems
failed to negotiate V.34 or
56K protocols. 4 -Protocol
Failure - the modems failed
to negotiate V.42 protocol.

Robbed-Bit Signaling (56K only) 6 The number of robbed bits

detected.

Digital Loss 0 Digital Loss in dB.

Remote Server ID XXX ID number of remote server.

S-Registers Reference

S-registers generally affect how the AT commands perform. Contents of the registers
can be displayed or modified when the modem is in command mode.

To display the value of an S-register, type

ATSn?

where n is the register number. Press ENTER.

To modify the value of an S-register, type

ATSn = r

where n is the register number, and r is the new register value. Press ENTER.

S0 Auto Answer Ring Number

Range: 0−255
Default: 0
Units: rings

This register determines the number of rings the modem will count before automati­cally answering a call. Enter 0 (zero) if you do not want the modem to automatically
answer at all. When disabled, the modem can only answer with an ATA command.

65

S1 Ring Counter

Range: 0−255
Default: 0
Units: rings

This register, Ring Counter, is read only. The value of S1 is incremented with each
ring. If no rings occur over a six second interval, this register is cleared.

S2 AT Escape Character (user defined)

Range: 0−255
Default: 43
Units: ASCII

This register determines the ASCII valued used for an escape sequence. The default is
the + character. The escape sequence allows the modem to exit data mode and enter
command mode when on-line. Values greater than 127 disable the escape sequence.

S3 Command Line Termination Character (user defined)

Range: 0−127, ASCII decimal
Default: 13 (carriage return)
Units: ASCII

This register determines the ASCII values as the carriage return character. This char­acter is used to end command lines and result codes.

S4 Response Formatting Character (user defined)

Range: 0−127, ASCII decimal
Default: 10 (line feed)
Units: ASCII

This register determines the ASCII value used as the line feed character. The modem
uses a line feed character in command mode when it responds to the computer.

S5 Command Line Editing Character (user defined)

Range: 0−32, 127
Default: 8 (backspace)
Units: ASCII

This register sets the character recognized as a backspace and pertains to asynchro-

66

nous only. The modem will not recognize the backspace character if it is set to a value
that is greater than 32 ASCII. This character can be used to edit a command line.
When the echo command is enabled, the modem echoes back to the local DTE the
backspace character, an ASCII space character, and a second backspace character.
This means a total of three characters are transmitted each time the modem processes
the backspace character.

S6 Wait Before Dialing

Range: 2-65
Default: 2
Units: seconds

This register sets the length of time, in seconds, that the modem must wait (pause)
after going off-hook before dialing the first digit of the telephone number. The mo­dem always pauses for a minimum of two seconds, even if the value of S6 is less than
two seconds. The wait for dial tone call progress feature (W dial modifier in the dial
string) will override the value in register S6. This operation, however, may be affected
by some ATX options according to country restrictions.

S7 Connection Completion Time-Out

Range: 1-255
Default: 50
Units: seconds

This register sets the time, in seconds, that the modem must wait before hanging up
because carrier is not detected. The timer is started when the modem finishes dialing
(originate), or goes off-hook (answer). In originate mode, the timer is reset upon
detection of an answer tone if allowed by country restriction. The timer also specifies
the wait for silence time for the @ dial modifier in seconds. S7 is not associated with
the W dial modifier.

S8 Comma Dial Modifier Time

Range: 0-65
Default: 2
Units: seconds

This register sets the time, in seconds, that the modem must pause when it encoun­ters a comma (“,”) in the dial command string.

67

S10 Automatic Disconnect Delay

Range: 1-254
Default: 20
Units: 0.1 seconds

This register sets the length of time, in tenths of a second, that the modem waits
before hanging up after a loss of carrier. This allows for a temporary carrier loss
without causing the local modem to disconnect. The actual interval the modem waits
before disconnecting is the value in register S10.

S11 DTMF Dialing Speed

Range: 50-150
Default: 95
Units: 0.001 seconds

This register determines the dialing speed which is prefixed for each country.

S12 Escape Guard Time

Range: 0-255
Default: 50
Units: 0.02 seconds

This register sets the value (in 20 ms increments) for the required pause after the
escape sequence (default 1s).

S14 General Bit Mapped Options Status

Indicates the status of command options. Only bit 2 and bit 5 are used, read only.

Bit 3 Result codes (Vn)

0 = Numeric (V0)
1 = Verbose (Vl) (Default)

Bit 6 Pulse dial PPS selection (&Pn)

0 = 10 PPS (&p0, &p1) (Default)
1 = 20 PPS (&p2)

Default: 8 (00001000b)

68

S21 V.24/General Bit Mapped Options Status

Indicates the status of command options. Only bits 3, 4 and 5 are used, read only.

Bits 3-4 DTR behavior (&Dn)

0 = &D0 selected
1 = &D1 selected
2 = &D2 selected (Default)
3 = &D3 selected

Bit 5 DCD behavior (&Cn)

0 = &C0 selected
1 = &C1 selected (Default)

Default: 48 (00110000b)

S22 Results Bit Mapped Options Status

Indicates the status of command options. Only bits 4, 5 and 6 are used, read only.

Bits 4-6 result codes (Xn)

0 = X0 selected
4 = X1 selected
5 = X2 selected
6 = X3 selected
7 = X4 selected (Default)

Bit 7 Pulse dial make/break ratio (&Pn)

0 = 33/67 make/break ratio (&P1, &P2) (Default)
1 = 39/61 make/break ratio (&P0)

Default: 112 (01110000b)

S24 Timer to Control Sleep Mode

Range: 0, 5-255
Default: 10

This command displays the number of seconds of inactivity (no characters sent from
the DTE, no RING) in the off-line command state before the modem places itself
into standby mode. A value of zero prevents standby mode.

If a number between 1 and 4 is entered for this register, it will set the value to 5, and
the inactivity before standby will be 5 seconds. This is done for compatibility with
previous products which allowed time-outs down to 1s.

69

S28 V.34 Modulation Enable/Disable

0 = disabled, 1-255 = enabled,
Range: 0-255
Default: 1

This register enables/disables V.34 modulation.

S30 Inactivity Timer

Range: 0-255
Default: 0
Units: minutes

S30 specifies the length of time (in minutes) that the modem will wait before discon­necting when no data is sent or received. This function is only applicable to buffer
mode.

S32 Synthetic Ring Volume

Range: 0-255
Default: 10

This register specifies a synthetic ring volume in dB with an implied minus sign.

S33 Synthetic Ring Frequency

Range: 0-5
Default: 0

This register specifies a synthetic ring frequency. Valid ranges are 0-5, with 0= dis­abled and 1-5 corresponding to 5 ring frequencies.

S35 Data Calling Tone

0 = disabled, 1 = enableD
Range: 0-1
Default: 0

Data Calling Tone is a tone of certain frequency and cadence as specified in V.25
which allows remote Data/FAX/Voice discrimination. The frequency is 1300 Hz
with a cadence of .5 s on and 2 s off.

70

S36 Negotiation Fallback (default 7)

This register specifies the action to take in the event of negotiation failure when error
control is selected.

S36 = 0, 2 Hang up.
S36 = 1, 3 Fall back to an asynchronous connection.
S36 = 4, 6 Attempt MNP. If MNP fails, hang up.
S36 = 5, 7 Attempt MNP. If MNP fails, fall back to asynchronous

connection.

S37 Dial Line Rate (default 0)

S37 = 0 maximum modem speed
S37 = 1 reserved
S37 = 2 1200 bits/s and 75 bits/s
S37 = 3 300 bits/s
S37 = 4 reserved
S37 = 5 1200 bits/s
S37 = 6 2400 bits/s
S37 = 7 4800 bits/s
S37 = 8 7200 bits/s
S37 = 9 9600 bits/s
S37 = 10 12000 bits/s
S37 = 11 14400 bits/s
S37 = 12 16800 bits/s
S37 = 13 19200 bits/s
S37 = 14 21600 bits/s
S37 = 15 24000 bits/s
S37 = 16 26400 bits/s
S37 = 17 28800 bits/s
S37 = 18 31200 bits/s
S37 = 19 33600 bits/s

S38 56K Dial Line Rate (default 1)

There are 2 S-registers which support K56flex connections. S38 sets the maximum
56K downstream speed that the modem attempts to connect. To disable K56flex, set
S38 to 0. The S37 register is used to control the upstream V.34 rate. (ref. V.34 Data/
Fax Document). (Note: Use the AT-V90=x command to control V.90 connections)

S38 = 0 K56flex disabled - V.34 connection (see S37)
S38 = 1 K56flex autorate - maximum achievable connection
S38 = 2 32000 bits / s
S38 = 3 34000 bits / s
S38 = 4 36000 bits / s

71

S38 = 5 38000 bits / s
S38 = 6 40000 bits / s
S38 = 7 42000 bits / s
S38 = 8 44000 bits / s
S38 = 9 46000 bits / s
S38 = 10 48000 bits / s
S38 = 11 50000 bits / s
S38 = 12 52000 bits / s
S38 = 13 54000 bits / s
S38 = 14 56000 bits / s

S40 ETC Startup Autorating (default 0, range 0-2)

Range: 0-2
Default: 0

S20=0 Startup with normal autorating.
S20=1 Startup at initial rate of 4800 or below.
S20=2 Startup at initial rate of 9600 or below.

S42 Auto Rate (default 1, range 0-1)

0 = auto rate disabled, 1 = enabled.
Range: 0-1
Default: 1

This command is used for testing and debugging only. V.32bis and V.22bis auto rate
is disabled. Retrain operation is disabled or enabled in data mode, and fallback is
disabled in data mode.

S43 Auto Mode (default 1, range 0-1)

0 = auto mode disabled, 1 = enabled
Range: 0-1
Default: 1

This command is used for testing and debugging only. V.32bis startup auto mode
operation is disabled.

S48 LAPM Error Control and Feature Negotiation (default 7)

S48 = 7 Negotiation enabled.
S 48 = 128 Negotiation disabled; forces immediate fallback options

specified in S36.

72

The following chart lists the S36 and S48 configuration settings necessary to negoti­ate certain types of connections:

S48=7 S48 =128

S36 = 0, 2 LAPM or hangup do not use
S36 = 1, 3 LAPM or async async
S36 = 4, 6 LPAM, MNP, or hangup MNP or hangup
S36 = 5, 7 LAPM, MNP, or async MNP or async

S89 Timer to Control Sleep Mode

Range: 0, 5-255
Default: 10

This command displays the number of seconds of inactivity (no characters sent from
the DTE, no RING) in the off-line command state before the modem places itself
into standby mode. A value of zero prevents standby mode.
If a number between 1 and 4 is entered for this register, it will set the value to 5, and
the inactivity before standby will be 5 seconds. This is done for compatibility with
previous products which allowed time-outs down to 1s.

S90 Local Phone Status

0 = local phone on-hook
1 = local phone off-hook

This register tells the status of the local phone. It is read only.

S91 Line Transmit Level

Range: 6-15
Default: 15
Units: 1 dB

This register is effective only for Japan. It specifies the line transmit level in dB with
an implied minus sign.

S92 Direct Connect Transmit Level (default 20)

Sets the transmit level, in dBm for direct connect. This value may have different
settings for different phones.

73

The Result Code Summary

Result Code Description

OK Command executed
CONNECT Modem connected to line
RING A ring signal has been detected
NO CARRIER Modem lost carrier signal, or does not detect carrier

ERROR Iinvalid command
CONNECT 1200 EC* Connection at 1200 bits/s
NO DIALTONE No dial tone detected
BUSY Busy signal detected
NO ANSWER8 No quiet answer
CONNECT 2400 EC* Connection at 2400 bits/s
CONNECT 4800 EC* Connection at 4800 bits/s
CONNECT 9600 EC* Connection at 9600 bits/s
CONNECT 14400 EC* Connection at 14400 bits/s
CONNECT 19200 EC* Connection at 19200 bits/s
CONNECT 7200 EC* Connection at 7200 bits/s
CONNECT 12000 EC* Connection at 12000 bits/s
CONNECT 16800 EC* Connection at 16800 bits/s
CONNECT 300 EC* Connection at 300 bits/s
CONNECT 21600 EC* Connection at 21600 bits/s
CONNECT 24000 EC* Connection at 24000 bits/s
CONNECT 26400 EC* Connection at 26400 bits/s
CONNECT 28800 EC* Connection at 28800 bits/s
CONNECT 31200 EC* Connection at 31200 bits/s
CONNECT 33600 EC* Connection at 33600 bits/s
CONNECT 38400 EC* Connection at 38400 bits/s
CONNECT 57600 EC* Connection at 57600 bits/s
CONNECT 115200 EC Connection at 115200 bits/s
DELAYED Delay is in effect for the dialed number
BLACKLISTED Dialed number is blacklisted
BLACKLIST FULL Blacklist is full
CONNECT 32000 EC* Connection at 32000 bits/s, 56K rate
CONNECT 34000 EC* Connection at 34000 bits/s, 56K rate
CONNECT 36000 EC* Connection at 36000 bits/s, 56K rate
CONNECT 38000 EC* Connection at 38000 bits/s, 56K rate
CONNECT 40000 EC* Connection at 40000 bits/s, 56K rate
CONNECT 42000 EC* Connection at 42000 bits/s, 56K rate
CONNECT 44000 EC* Connection at 44000 bits/s, 56K rate
CONNECT 46000 EC* Connection at 46000 bits/s, 56K rate
CONNECT 48000 EC* Connection at 48000 bits/s, 56K rate
CONNECT 50000 EC* Connection at 50000 bits/s, 56K rate
CONNECT 52000 EC* Connection at 52000 bits/s, 56K rate
CONNECT 54000 EC* Connection at 54000 bits/s, 56K rate
CONNECT 56000 EC* Connection at 56000 bits/s, 56K rate
CONNECT 58000 EC* Connection at 58000 bits/s, 56K rate
CONNECT 60000 EC* Connection at 60000 bits/s, 56K rate
CONNECT 28000 EC* Connection at 28000 bits/s, V.90 rate
CONNECT 29333 EC* Connection at 29333 bits/s, V.90 rate
CONNECT 30666 EC* Connection at 30666 bits/s, V.90 rate
CONNECT 32000 EC* Connection at 32000 bits/s, V.90 rate
CONNECT 33333 EC* Connection at 33333 bits/s, V.90 rate

signal, or does not detect answer tone

74

CONNECT 34666 EC* Connection at 34666 bits/s, V.90 rate
CONNECT 36000 EC* Connection at 36000 bits/s, V.90 rate
CONNECT 37333 EC* Connection at 37333 bits/s, V.90 rate
CONNECT 38666 EC* Connection at 38666 bits/s, V.90 rate
CONNECT 40000 EC* Connection at 40000 bits/s, V.90 rate
CONNECT 41333 EC* Connection at 41333 bits/s, V.90 rate
CONNECT 42666 EC* Connection at 42666 bits/s, V.90 rate
CONNECT 44000 EC* Connection at 44000 bits/s, V.90 rate
CONNECT 45333 EC* Connection at 45333 bits/s, V.90 rate
CONNECT 46666 EC* Connection at 46666 bits/s, V.90 rate
CONNECT 48000 EC* Connection at 48000 bits/s, V.90 rate
CONNECT 49333 EC* Connection at 49333 bits/s, V.90 rate
CONNECT 50666 EC* Connection at 50666 bits/s, V.90 rate
CONNECT 52000 EC* Connection at 52000 bits/s, V.90 rate
CONNECT 53333 EC* Connection at 53333 bits/s, V.90 rate

* EC only appears when the Extended Result Codes configuration option is enabled. EC is replaced by

one of the following symbols, depending upon the error control method used:

V42bis—V.42 error control and V.42bis data compression.
V42—V.42 error control only.
MNP 5— MNP class 4 error control and MNP class 5 data compression.
MNP 4— MNP class 4 error control only.
NoEC—No error control protocol.

75

Appendix B: Comm unications Regulations

FCC Regulations

The following statements are provided in accordance with the Federal Communica­tions Commission (FCC) regulations. Please read these statements carefully before
installing your modem.

FCC Part 68 Requirements

This equipment complies with Part 68 of the FCC Rules. On the bottom of this
equipment is a label that contains, among other information, the FCC Registration
Number and Ringer Equivalence Number (REN) for this equipment. If requested,
this information must be given to the telephone company.

The REN is used to determine the maximum number of devices connected to your
telephone line that will ring in response to an incoming call. In most, but not all,
areas, the total REN of devices connected to a line should not exceed five (5.0). To
find out the total permitted in your area, contact your local telephone company.

If your telephone equipment causes harm to the telephone network, the telephone
company can discontinue your service temporarily. If possible, the company will
notify you in advance. But if advance notice isn’t practical, you will be notified as
soon as possible. You will be informed of your right to file a complaint with the FCC.

Your telephone company can make changes in its facilities, equipment, operations,
or procedures that could affect the operation of your equipment. If so, you will be
notified in advance so you can make the changes needed to maintain uninterrupted
service.

If you experience trouble with this equipment, please contact the manufacturer at the
address given in this manual. The telephone company may ask that you disconnect
this equipment from the network until the problem has been corrected or until you
are sure that the equipment in is not malfunctioning.

This equipment may not be used on public coin service provided by the telephone
company. Connection to party lines is subject to state tariffs.

Declaration of Conformity

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 installa-

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tion. 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 and television reception, the user is encouraged to try to correct the
interference by one or more of the following measures:

• Reorient 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.

CAUTION: CHANGES OR MODIFICATIONS NOT EXPRESSLY
APPROVED BY THE PARTY RESPONSIBLE FOR COMPLIANCE
COULD VOID THE USER’S AUTHORITY TO OPERATE THE
EQUIPMENT.

Canadian Department Of Communications (CDOC)

Requirements for End Users:

Notice: The Canadian Department of Communications label identifies certified equip­ment. This certification means the equipment meets certain telecommunications
network requirements. The Department does not guarantee the equipment will op­erate to the user’s satisfaction.

Before installing this equipment users should ensure that connection to the line is
allowed by 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 telephone extension cord. Compliance with the above conditions may not pre­vent degradation of service in certain 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 lines, 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.

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