MaxTech xm144ic, xpm56i User Manual

High Performance
V.32bis/V.42bis
14,400 BPS Internal
FAX/Voice/Data
Modem

Featuring Advanced
Speakerphone Functions

User's Manual

Contents

Section One Introduction ........................... 1

Section Two Installation ............................. 1

Section Three AT Command Set .................. 6

Section Four S Register Summary ........... 12

Section Five Result Codes......................... 13

Section Six Troubleshooting ................... 1 4

Section Seven Specifications ....................... 16

Section Eight Support And Service ........... 17

Section Nine FCC, DOC, Copyright And

Other Notices ....................... 17

Part #MAN0017 Rev 1.1 CL-MD1414ECT-SP

Section One - Introduction

The 14.4 Kbps Series FAX/Voice/Data Modem con­nect your computer to all popular high speed modems
available today. This manual describes the hardware instal­lation procedures for your new modem product. Additional
information on AT commands and S-registers are provided
so that your system can be customized for a particular
operating environment.

Section Two - Installation

This section will provide step by step instructions on
how to install your new 14.4 Kbps FAX/Voice/Data modem.
Installation of this modem product is a two-step process
consisting of actual hardware installation and communica­tion software installation and configuration.

2.1 Unpacking Your Modem

Before you begin your installation, be certain that you
have all the items listed below. This package contains:

• A modem • A telephone cable

• User's manual • Software for the modem

• Software user's manual

2.2 Hardware Installation

Installation of this modem requires opening and ma­nipulating your PC. Exercise caution at all times when
working with AC powered and static-sensitive equipment.
Turn off and unplug your PC before installation. Discharge
any static electricity from your body by touching any metal
surface.

1. Turn off and unplug your computer from the AC outlet.

2. Determine how many serial ports are built into your com-

puter (examine the back of your computer). Refer to Figure
2-1 to identify common serial ports.

Figure 2-1 Common Serial Ports

male connector

1

3. If you have one or more serial ports on the back of your

computer, reconfigure your modem. Your modem is shipped
set to COM1 on IRQ4. Reconfigure the modem to either
COM3/IRQ5 or COM4/IRQ2 (refer to Table 2-1 in Sec­tion 2.4).

4. Remove your computer's cover

(refer to your computer's owner
manual).

5. Select any available half-card

slot, and then remove the slot
cover (refer to Figure 2-2).

6. Carefully slide the internal mo-

dem into the slot you have cho­sen, applying even pressure un­til the modem is completely
seated in the slot.

7. Fasten the retaining bracket

with the screw from the slot cover. Make sure the modem is
properly aligned. Store the slot cover for future use.

8. Replace the computer cover and plug in your computer.

9. Connect the telephone cable from the modem (“LINE”

connector) to the telephone wall jack.

10. Optionally connect: 1) your telephone to the modem's

“PHONE” connector, 2) a speaker to the modem's “SPKR”
connector, and 3) a microphone to the modem's “MIC”
connector. Note that the distance between the microphone

and the speaker must be greater than twelve (12) inches
to prevent unpleasant speaker feedback.

11. Turn your computer on. Your modem is now installed.

Figure 2-2
Expansion

Slots

2.3 Software Installation/Configuration

You are now ready to install and configure the commu­nication software. Refer to your software manual for instal­lation procedures. Your software must be configured to
communicate with the modem on the same COM port and
IRQ line used by the modem.

If you are using Microsoft Windows 3.x and have
changed the modem's operating setting from the default COM1/
IRQ4 to COM3/IRQ5 or COM4/IRQ2 to avoid a conflict, you
must use Windows' Control Panel (in the “Main” Group
within Program Manager) to configure Windows to recognize
the new settings before installing any software. In Control
Panel, double-click on Ports. Click once on the icon for the
Com port you have set your modem to. Click the Settings
button. Click the Advanced button. The Base I/O Port

2

Address should already be set by Windows to the COM port
address used by the modem (refer to Table 2-1). Change the
Interrupt Request Line (IRQ) to match the IRQ on the
modem. If you have set the modem to COM4/IRQ2, do not

select IRQ2. You will need to set the IRQ in Control Panel to
IRQ9 for Windows to recognize the modem. (In an operating

system designed for 286 or better machines, IRQ 9 is
equivalent (redirected) to IRQ2.)

A modem setting which skips one or more COM port
assignments requires special attention in the Windows 3.x
Control Panel. For example, if your computer is equipped
with two serial ports (COM1 and COM2) and have set the
modem to COM4 instead of COM3, the Control Panel
settings for COM4 may say Default. In this case, Windows

3.x will operate the modem as the third serial device and
recognize it as “COM3” (This unusual COM port reassign­ment does not occur in future releases of Windows). The
correct COM4 address (2E8) has been placed into the
Control Panel COM3 position. Configure the COM3 entry in
Control Panel by changing the IRQ box to match the IRQ that
has been set on the modem. (When running any Windows

3.x-based communication or fax programs, select COM3 as
the COM port for the modem.)

After these settings are made, click OK. Click Restart

Now. Windows can now recognize your modem.

Note: Since the “COM3” substitution for your
COM4 modem only occurs under Windows 3.x,
your DOS communication and fax programs will
still recognize the modem configuration as COM4.

We suggest the following communication parameters
when you first use your data communication software.
Consult the software manual for information on using these
and other parameters/features.

38,400 bps; 8 data bits; no parity; 1 stop bit; RTS/
CTS flow control set to “on;” initialization string:
AT&F

The commands used by the modem are compatible
with the command set used by Intel modems. Select an “Intel
144I Faxmodem” type in your data communications soft­ware, select a “Generic Class 1” type in your fax software
and select “Cirrus Logic” in your Voice software.

3

2.4 COM Port and Interrupt Settings

If your computer is equipped with one or more serial
ports, you will need to change the COM Port setting on the
modem (to either COM 3 or 4), or disable the PC's built-in
COM port.

An IRQ (interrupt request) is a signal generated by an
I/O device that notifies the computer of incoming data. Your
internal modem is capable of accessing IRQs 2, 3, 4, and 5.

I/O devices in your computer cannot share an IRQ with
another device at the same time. Since IRQs can not be

shared at the same time, COM 3 is generally configured to use
IRQ 5, and COM 4 to use IRQ 2. This avoids sharing of IRQs
with COM 1 (IRQ4) and COM 2 (IRQ3).

To change the default COM Port or IRQ settings from
COM 1/IRQ 4 to another setting, locate the Switch Block on
your internal modem (Figure 2-3). Refer to Table 2-1 to
configure the Switch Block to the COM Port and IRQ

Figure 2-3 Switch Block SW-1 Location

SW-1

Table 2-1 Switch Block Settings

COM Port IRQ SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6

1 (3F8)
default

2 (2F8) 3 OFF ON OFF ON OFF OFF
3 (3E8) 5 ON OFF OFF OFF OFF ON

4 (2E8) 2(9)** OFF OFF ON OFF OFF OFF

* Use these IRQs only if your software can not address IRQ5 or IRQ2
** When using Windows with the modem set for IRQ2, select IRQ9 in

4 ON ON OFF OFF ON OFF

4* ON OFF OFF OFF ON OFF

3* OFF OFF OFF ON OFF OFF

Control Panel

4

combination needed for your application. Any time the

COM or IRQ setting for the modem is changed, the
settings in the software must be changed to match.

2.5 Using Fax, Voice, and Speakerphone

Capabilities of the Modem

Your modem has built-in advanced FAX, Voice, and
Speakerphone functions. These functions are accessed
through software. Please consult your FAX/Voice/Speaker­phone software manual about procedures on using these
functions. Note that the modem's FAX/Voice/Speakerphone
commands are used by the software to implement these
functions and are not designed to be used as standalone AT
commands.

Voice functions include recording and playback of
voice prompts (files). To record or playback voice with your
modem, attach a telephone to the RJ-11 jack marked
“PHONE” on the back of the modem. Follow specific instruc­tions in the FAX/Voice/Speakerphone software on recording
and playback of voice prompts.

2.6 Testing Your Modem After Installation

In order to test your modem you should be familiar
with your communication software. Load and set up your
communication software and enter into “terminal mode.”
Make sure that the COM Port and IRQ settings of the modem
match the software. Type AT on your terminal screen and
press ENTER. You may see “AATT” or nothing on the
screen. In either case, the modem should respond with an OK
or 0. If it does not, please refer to Section 2.4 for information
on COM Ports and IRQ’s or Section 6 for troubleshooting
information.

2.7 Using Your Modem

The communication software included with your mo­dem product provides a user friendly interface to access the
fax, voice, and data functions of your modem. This software
should be sufficient for all of your communication needs.
There may be times when you need to access the modem
manually via modem commands. Read Section 3 for a
summary description of the modem command set before
manually accessing the modem. You may want to read the
software manual first, however, as the software may already

5

provide a user friendly method of accessing the functions you
need (i.e. dialing or answering calls).

2.8 Where To Go From Here

You should familiarize yourself with the functions
available from the included software by reading its manual.
You will be accessing most, if not all, of the modem's
functions from this software. You may also use any other
commercially available communication software with the
modem. Read Section 3 ONLY if you are interested in
accessing the modem manually, and not through the included
software. Section 4 and 5 contain reference material, and can
be skipped. If you have difficulties getting your modem to
work, read Section 6, Troubleshooting to find answers to
commonly asked questions and problems.

Section Three - AT Command Set

3.1 Executing Commands

Commands are accepted by the modem while it is in
Command Mode. Your modem is automatically in Com­mand Mode until you dial a number and establish a connec­tion. Commands may be sent to your modem from a PC
running communication software or any other terminal de­vices.

Your modem is capable of data communication at rates
of: 300, 1200, 2400, 4800, 9600, 14400, 19200, 38400, and
57600 bps. Make sure your COM port baud rate setting in
your communications software is set to one of the above
speeds.

3.2 Command Structure

All commands sent to the modem must begin with AT
and end with ENTER. All commands may be typed in either
upper or lower case, but not mixed. To make the command
line more readable, spaces may be inserted between com­mands. If you omit a parameter from a command that
requires one, it is just like specifying a parameter of 0.
Example:

ATH [ENTER]

This command causes your modem to hang up.

6

3.3 Basic AT Commands

In the following listings, all default settings are printed
in bold text.

Command Function

A Manually answer incoming call
A/ Repeat last command executed. Do not precede

AT Appears at the beginning of every command

B_ B0 CCITT mode

D_ 0 - 9, A-D, # and *

DS=n Dial one of the four telephone numbers (n=0-

E_ E0 Commands are not echoed

+++ TIES Escape Characters - Switch from Data

H_ H0 Force modem on-hook (hang up)

I_ I0 Display product-identification code

L_ L0 Low speaker volume

M_ M0 Internal speaker off

A/ with AT or follow with ENTER

line

B1 Bell mode

P pulse dialing

R originate calls in answer mode
T touch-tone dialing
W wait for second dial tone
, pause
@ wait for five seconds of silence
! flash
; return to Command Mode after dialing

3) stored in the modem’s non-volatile memory

E1 Commands are echoed

Mode to Command Mode

H1 Force modem off-hook (make busy)

I1 Factory ROM ID
I2 Internal memory test
I3 Device ID
I4 Internal ID

L1 Low speaker volume

L2 Medium speaker volume

L3 High speaker volume

M1 Internal speaker on until carrier detected

7

M2 Internal speaker always on
M3 Internal speaker on until carrier detected and

off while dialing

N_ N0 Connect only at DTE rate

O_ O0 Return to Data Mode

P Set Pulse dial as default
Q_ Q0 Modem sends responses

Sr? r=0-30 Read and display value in register r
Sr=n Set register r to value n (r=0-30; n=0-255)
T Set Tone Dial as default
V_ V0 Numeric responses

X_ X0 Hayes Smartmodem 300 compatible

Y_ Y0 Modem does not send or respond to break

Z_ Z0 Reset and retrieve active configuration

N1 Automatic rate negotiation

O1 Return to Data Mode and initiate an equalizer

retrain

Q1 Modem does not send responses

V1 Word responses

responses/blind dialing

X1 Same as X0 plus all CONNECT responses/

blind dialing
X2 Same as X1 plus dial tone detection
X3 Same as X1 plus busy signal detection/blind

dialing

X4 All responses and dial tone and busy signal

detection

signals

Y1 Modem sends break signal for four seconds

before disconnecting

profile 0

Z1 Reset and retrieve active configuration

profile 1

3.4 Extended AT Commands

&C_ &C0 Force Carrier Detect Signal High (ON)

&D_ &D0 Modem ignores the Data Terminal Ready

&C1 Turn on Carrier Detect signal when remote

carrier signal is present

signal

8

&D1 Modem returns to Command Mode after DTR

toggle

&D2 Modem hangs up, returns to the Command

Mode after DTR toggle

&D3 Resets modem after DTR toggle

&F_ &F Recall factory default configuration
&G_ &G0 Guard tone disabled

&M_ &M0 Asynchronous operation
&P_ &P0 United States setting for off-hook (make) -

&S_ &S0 Force DSR Signal High (ON)

&T_ &T0 Ends test in progress

&U_ &U0 Enable Trellis Coding @ V.32

&V_ &V 0 Displays Active and Stored Profile 0

&W_ &W0 Stores the active profile as Configuration

&Y_ &Y0 Configuration Profile 0 active upon Power

&G1 550 Hz guard tone
&G2 1800 Hz guard tone

to-on-hook (break) ratio

&P1 UK and Hong Kong off-hook (make)-to-on-

hook (break) ratio

&S1 DSR is off in command mode, on in on-line

mode

&T1 Perform Local Analog Loopback Test
&T3 Perform Local Digital Loopback Test
&T4 Grant Remote Digital Loopback Test

request by remote modem
&T5 Deny Remote Digital Loopback Test request

by remote modem
&T6 Perform a Remote Digital Loopback Test
&T7 Perform a Remote Digital Loopback Test and

Self-Test
&T8 Perform Local Analog Loopback Test and

Self-Test

&U1 Disable Trellis Coding @ V.32

&V1 Displays Active and Stored Profile 1

Profile 0
&W1 Stores the active profile as Configuration

Profile 1

on or reset

&Y1 Configuration Profile 1 active upon Power on

or reset

9

&Zn=x n=0-3 Store telephone number x into non-volatile

%E_ %E0 V.22bis auto-retrain disabled

%G_ %G0 Enable Auto Fall Forward/Back

RAM

%E1 V.22bis auto-retrain enabled

%G1 Disable Auto Fall Forward/Back

3.5 MNP/V.42/V.42bis Commands

%An n=0- Set auto-reliable fallback character to n (where

%C_ %C0 Disable MNP Class 5 data compression

\A_ \A0 64-character maximum MNP block size

\Bn n=1-9 Send a 1/10 second line break to the modem,

\C_ \C0 Do not buffer data during LAPM/MNP

\G_ \G0 Disable DCE flow control

\J_ J0 Disable serial port data rate adjustment

\Kn n=0-5 Set break control, where n= 0 to 5. Default

\N_ \N0 Normal data-link only

127 n = 0 to 127,ASCII). Requires the \C2 setting

%C1 Enable MNP Class 5 data compression

\A1 128-character maximum MNP block size
\A2 192-character maximum MNP block size

\A3 256-character maximum MNP block size

where n = 1 to 9. At normal connect, the

default is 3

handshaking

\C1 Buffer all data for 4 seconds, until receiving

200 characters or until a packet is detected
\C2 Do not buffer data; switch to normal mode

when fallback character is detected

\G1 Enable DCE flow control

(keep high data rate between DTE and

modem, regardless of modem-to-modem

data rate)

J1 Enable serial port data rate adjustment so

serial data rate automatically adjusts to match

the modem-to-modem data rate

is 5

\N1 Direct data-link only
\N2 MNP data link only

\N3 V.42/MNP/Normal data link

10

\N4 V.42 data link only

\O Initiate reliable link during a normal link
\Q_ \Q0 Turn off flow control

\Tn Inactivity timer, where n = 0 to 90 minutes.

\U Accept reliable link during a normal link
\V_ \V0 Do not send extended responses

\X_ \X0 Process XON/XOFF but don’t pass through

\Y Switch to reliable link from normal link
\Z End the reliable connection and switch to

-J -J0 Disable error control detection phase

"H "H0 V.42bis data compression disabled

"On n=6- Set maximum V.42bis data block size to n.

\Q1 XON/XOFF software flow control
\Q2 CTS signal unidirectional hardware flow

control

\Q3 RTS/CTS signal bi-directional hardware

flow control

Default is 0

\V1 Send extended response set 1

\V2 Send extended response set 2

\X1 Process XON/XOFF and pass through

normal operation

-J1 Enable error control detection phase

"H1 Can send but not receive V.42bis data

compression
"H2 Can receive but not send V.42bis data

compression

"H3 Bidirectional V.42bis data

compression enabled

250 Default is 16

3.6 Fax Class 1 Commands

+FAA=n Data/Fax auto answer enable. Default is 0
+FAE=n Data/Fax auto answer enable. Default is 0
+FCLASS? Returns current operating mode
+FCLASS=n Sets operating mode
+FCLASS=? Returns available supported modes
+FMFR? Identify modem manufacturer
+FMDL? Identify product model
+FPREV? Identify product revision

11

+FRH=<mod> Receive HDLC data
+FRHM=<mod>Receive data
+FRS=<time> Wait for silence
+FRTn Fax receive test command
+FTH=<mod> Transmit HDLC data
+FTM=<mod> Transmit data
+FTS=<time> Stop transmission and pause
+FTTn Fax transmit test command

3.7 Voice Mode Commands

#VBP Generate beep tone
#VCL=n Voice mode selection. Default is 0
#VCSD=n Command mode silence detection. Default is 0
#VGPS=n Input pin function selection. Default is 0
#VGPC=n Input pin character selection. Default is 0
#VIN Read general purpose input pins
#VIP=n Initialize parameter. Default is 0
#VLN=n Relay/speaker control. Default is 0
#VOUT=n Write to output pins. Default is 0
#VPH Telephone emulation mode.
#VPL=n Play level. Default is 127
#VPY Play mode
#VRD Record mode
#VRL=n Recording level. Default is 127
#VSL=n Recording silence threshold level. Default

#VSM=n Sampling mode. Default is CL1
#VSQT=n Record mode “q” silence time. Default is 60
#VSR=n Sampling rate. Default is 9600
#VSST=n Record mode “s” silence time. Default is 60

is 127

Setion Four - S Registers

Your modem has 35 registers, designated S0 through
S30, S37, S90, S108, and S109. Table 4-1 shows the regis­ters, their functions, and their default values. Some registers
can have their values changed by commands. If you use a
command to change a register value, the command remains
in effect until you turn off or reset your modem. Your modem
then reverts to the operating characteristics specified in its
non-volatile memory. Refer to Section 3 for information on
how to use the AT commands to manipulate the S registers.

12

Table 4-1 S - Registers

Register Function Range/units Default

S0 Auto-answer Ring 0-255/rings 0
S1 Ring counter 0-255/rings 0
S2 Escape code character 0-127/ASCII 43
S3 Carriage return character 0-127/ASCII 13
S4 Line feed character 0-127/ASCII 10
S5 Backspace character 0-32, 127/ASCII 8
S6 Dial tone wait time 0-255/seconds 2
S7 Remote carrier wait time 1-255/seconds 30
S8 Comma pause time 0-255/seconds 2
S9 Carrier detect time 0-255/0.1 second 6
S10 Carrier loss time 0-255/0.1 second 14
S11 Touch-tone dialing speed 50-255/0.001 second 70
S12 Esc. character detect time 0-255/0.02 second 50
S13 Reserved
S14 Echo, response, dialing, Bit-mapped

originate/answer

S15 Reserved
S16 Modem test options Bit-mapped
S17 Reserved
S18 Modem test timer 0-255/seconds 0
S19 Reserved
S20 Reserved
S21 DTR, DCD, DSR, and Bit-mapped

Long Space Disconnect

S22 Speaker and response Bit-mapped
S23 RDL, DTE data rate, Bit-mapped

parity,and guard tone

S24 Reserved
S25 DTR delay 0-100/seconds 5
S26 RTS/CTS delay interval 0-255/0.01 second 1
S27 Async operation, CCITT/ Bit-mapped

Bell mode

S28 Reserved
S29 Reserved
S30 Sleep mode time 0-90/seconds 10
S37 Maximum line speed 0-11 0
S90 Disconnect timer 0-255/seconds 0
S108 Retrain options 0-3 2
S109 Line Speed permitted 2-62 62

Section Five - Result Codes

13

BASIC RESPONSE CODES

OK 0 CONNECT 1
RING 2 NO CARRIER 3
ERROR 4 CONNECT 1200 5
NO DIALTONE 6 BUSY 7
NO ANSWER 8 CONNECT 2400 10
CONNECT 4800 11 CONNECT 7200 1 2
DATA 13 CONNECT 9600 14
FAX 15 CONNECT 12000 1 6
CONNECT 14400 1 7 +FCERROR +F4

MODIFIED RESPONSE CODES (\V1)

CONNECT 300/REL 22 CONNECT 1200/REL 24
CONNECT 2400/REL 25 CONNECT 4800/REL 26
CONNECT 7200/REL 27 CONNECT 9600/REL 28
CONNECT 12000/REL 29 CONNECT 14400/REL 30

EXTENDED RESPONSE CODES (\V2)

CONNECT 300/REL-MNP 32
CONNECT 1200/REL-MNP 34
CONNECT 2400/REL-MNP 35
CONNECT 4800/REL-MNP 36
CONNECT 7200/REL-MNP 37
CONNECT 9600/REL-MNP 38
CONNECT 12000/REL-MNP 39
CONNECT 14400/REL-MNP 40
CONNECT 300/REL-MNP 5 42
CONNECT 1200/REL-MNP 5 44
CONNECT 2400/REL-MNP 5 45
CONNECT 4800/REL-MNP 5 46
CONNECT 7200/REL-MNP 5 47
CONNECT 9600/REL-MNP 5 48
CONNECT 12000/REL-MNP 5 49
CONNECT 14400/REL-MNP 5 50
CONNECT 1200/REL-LAPM 54
CONNECT 2400/REL-LAPM 55
CONNECT 4800/REL-LAPM 56
CONNECT 7200/REL-LAPM 57
CONNECT 9600/REL-LAPM 58
CONNECT 12000/REL-LAPM 59
CONNECT 14400/REL-LAPM 60
CONNECT 1200/REL-LAPM V.42BIS 64
CONNECT 2400/REL-LAPM V.42BIS 65
CONNECT 4800/REL-LAPM V.42BIS 66
CONNECT 7200/REL-LAPM V.42BIS 67

14

CONNECT 9600/REL-LAPM V.42BIS 68
CONNECT 12000/REL-LAPM V.42BIS 69
CONNECT 14400/REL-LAPM V.42BIS 70

Section Six - Troubleshooting

This section describes some of the common problems
you may encounter while using your modem. If you can not
resolve your difficulty after reading this chapter, contact your
dealer or vendor for assistance.

Modem does not respond to commands.

1. Make sure the modem is not configured with a conflicting

COM port and IRQ setting (see Section 2.4). Your modem
can not be configured as COM1 (default) if another device in
your system is also configured as COM1. Similarly, IRQ
settings may not overlap.

2. Make sure the communication software is configured to

“talk” to the modem on the correct COM port and IRQ setting
(same COM port and IRQ setting as the modem). Your
communication software must know which address your
modem is using in the system in order to pass data to it.
Similarly, IRQ settings must be set correctly to receive data
from the modem.

3. Make sure that your modem is initialized correctly. Your

modem may have been initialized to not display responses.
You may factory-reset the modem by issuing AT&F and
press ENTER. The factory default allows the modem to
display responses after a command has been executed.

4. Make sure the baud rate setting in your software is set to

57600, 38400, 19200, 14400, 9600, 2400, 1200, or 300 bps.
An incorrect baud rate prevents the modem from operating
properly.

Modem does not dial.

1. Make sure the modem is connected to a working phone line.

Replace the modem with a working phone to ensure that the
phone line is working.

2. Make sure the phone line is connected to the jack marked

“LINE.” Incorrect connection prevents the modem from
operating properly. Refer to Section 2.2 for modem connec­tion instructions.

Modem dials but does not connect.

1. Make sure the IRQ setting is identical on both the modem

AND the software. Modem and software must be configured

15

identically.

2. Make sure the phone line is working properly. Replace the

modem with a regular phone and dial the number. If the line
sounds noisy, you may have difficulty connecting to the
remote device.

Modem makes a connection but no data appears
on your screen.

1. The remote system may be waiting to receive your data before

it begins. Try pressing the ENTER key a few times.

2. Make sure the correct data format (data bits, stop bits, and

parity bits) and flow control (RTS/CTS) method are being
used.

3. Make sure the correct terminal emulation mode is being used

(see communication software manual).

4. Make sure the modem is not sharing an IRQ or COM port with

another device (see Section 2.4).

High pitch tone is heard whenever you answer the
phone.

1. Make sure Auto-Answer is turned off. Your modem is factory

configured to NOT auto-answer. Issue AT&F to factory reset
your modem.

Modem experiences errors while communicating
with a remote modem.

1. Make sure the DTE speed is the same as the modem connec-

tion speed when in Direct Mode (\N1 command in effect).

2. Make sure the remote system and your modem use the same

communication parameters (i.e., baud rate, data bit length,
parity, and stop bit).

3. Make sure RTS/CTS hardware flow control is enabled and

XON/XOFF software flow control is disabled in the commu­nication software.

4. Make sure the data speed is not faster than your computer's

capability. Most IBM compatibles are capable of 19,200 bps
under DOS and Windows. Operating at higher speeds under
Windows requires a faster CPU (386/486 or better).

Modem experiences bursts of errors or suddenly
disconnects while communicating with a remote
modem.

1. Make sure Call Waiting is turned off.

2. Make sure the phone line does not exhibit excess noise.

Modem exhibits poor voice record or playback.

16

1. Make sure the correct modem type is selected in the Voice/

FAX software. Use “Cirrus Logic” or similar selection. Do
not select “Rockwell or Rockwell ICS” configuration.

Section Seven - Specifications

CCITT/Bell Std. V.42bis, V.42, V.32bis, V.32, V.29,

MNP protocols: MNP 5, 4, 3, 2
Host Interface: 8 bit PC bus
COM ports: 1, 2, 3, 4
IRQ lines: 2, 3, 4, 5
FAX Group: Group III Send/Receive Standard
FAX Command set: EIA/TIA-578 Service Class 1
Voice Command set: Cirrus Logic
Escape Detection: TIES Escape Sequence
Transmit level: -12 dBm +/- 1 dB
Receiver Sensitivity: -40 dBm
UART: 16550 compatible
Data format: 300-57600 bps (8N1, 7E1,7E2,7O1,7O2)
Power: 0.75 W
Temperature: 0 to 55 degrees C (Operating); -20 to 80

V.27ter, V.22bis, V.22, V.21, V.17,
Bell212/103

degrees C (Non-operating)

Section Eight - Support and Service

In the unlikely event you experience difficulty in the use of this
product, we suggest you: (1) consult the Troubleshooting section
of this guide and (2) consult with your dealer. To obtain service for
this product, follow the Return Merchandise Authorization Proce­dure as outlined in the Warranty card.

Section Nine - FCC , DOC & Other Notices

9.1 FCC Compliance

This equipment complies with Part 68 of the FCC Rules. On this
equipment is a label that contains, among other information, the
FCC registration number and Ringer Equivalence Number (REN)
for this equipment. You must, upon request, provide this informa­tion to your telephone company.

If your telephone equipment causes harm to the telephone net­work, the Telephone Company may discontinue your service
temporarily. If possible, they will notify in advance. But, if
advance notice isn’t practical, you will be notified as soon as

17

possible. You will be informed of your right to file a complaint
with the FCC.

Your telephone company may make changes in its facilities,
equipment, operations, or procedures that could affect proper
operation of your equipment. If they do, you will be notified in
advance to give you an opportunity to maintain uninterrupted
telephone service.

The FCC prohibits this equipment to be connected to party lines or
coin-telephone service.

In the event that this equipment should fail to operate properly,
disconnect the equipment from the phone line to determine if it is
causing the problem. If the problem is with the equipment, discon­tinue use and contact your dealer or vendor.

The FCC also requires the transmitter of a FAX transmission be
properly identified (per FCC Rules Part 68, Sec. 68.381 (c) (3)).

9.2 FCC Class B Statement

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 the 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

Notice: 1) Shielded cables, if any, must be used in order to comply
with the emission limits. 2) Any change or modification not
expressly approved by the Grantee of the equipment authorization
could void the user’s authority to operate the equipment.

9.3 DOC Compliance Information

NOTICE: The Canadian Department of Communications label

identifies certified equipment. This certification means that the

18

equipment meets certain telecommunications network protective,
operational and safety requirements. The Department does not
guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users ensure that it is permissible
to be connected to the facilities of the local telecommunications
company. The equipment must also be installed using an accept­able method of connection. The customer should be aware that
compliance with the above conditions may not prevent degrada­tion of service in some situations.

Repairs to certified equipment should be made by an authorized
Canadian maintenance facility designated by the supplier. Any
repairs or alterations made by the user to this equipment, or
equipment malfunctions, may give the telecommunications com­pany cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical
ground connections of the power utility, telephone 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.

NOTICE: The Load Number (LN) assigned to each terminal
device denotes the percentage of the total load to be connected to
a telephone loop which is used by the device, to prevent overload­ing. The termination on a loop may consist of any combination of
devices subject only to the requirement that the sum of the Load
Numbers of all the devices does not exceed 100.

9.4 Disclaimer, Copyright, And Other Notices

The information contained in this manual has been validated at the
time of this manual's production. The manufacturer reserves the
right to make any changes and improvements in the product
described in this manual at any time and without notice. Conse­quently the manufacturer assumes no liability for damages in­curred directly or indirectly from errors, omissions or discrepan­cies between the product and the manual.

All registered trademarks are the property of their respective
owners.

Copyright © 1995 All rights reserved. No reproduction of this
document in any form is permitted without prior written authori­zation from the manufacturer.

First Edition GZ/DR - Version 1.0

19

Section One - Introduction

The 14.4 Kbps Series FAX/Voice/Data Modem con­nect your computer to all popular high speed modems
available today. This manual describes the hardware instal­lation procedures for your new modem product. Additional
information on AT commands and S-registers are provided
so that your system can be customized for a particular
operating environment.

Section Two - Installation

This section will provide step by step instructions on
how to install your new 14.4 Kbps FAX/Voice/Data modem.
Installation of this modem product is a two-step process
consisting of actual hardware installation and communica­tion software installation and configuration.

2.1 Unpacking Your Modem

Before you begin your installation, be certain that you
have all the items listed below. This package contains:

• A modem • A telephone cable

• User's manual • Software for the modem

• Software user's manual

2.2 Hardware Installation

Installation of this modem requires opening and ma­nipulating your PC. Exercise caution at all times when
working with AC powered and static-sensitive equipment.
Turn off and unplug your PC before installation. Discharge
any static electricity from your body by touching any metal
surface.

1. Turn off and unplug your computer from the AC outlet.

2. Determine how many serial ports are built into your com-

puter (examine the back of your computer). Refer to Figure
2-1 to identify common serial ports.

Figure 2-1 Common Serial Ports

male connector

1

3. If you have one or more serial ports on the back of your

computer, reconfigure your modem. Your modem is shipped
set to COM1 on IRQ4. Reconfigure the modem to either
COM3/IRQ5 or COM4/IRQ2 (refer to Table 2-1 in Sec­tion 2.4).

4. Remove your computer's cover

(refer to your computer's owner
manual).

5. Select any available half-card

slot, and then remove the slot
cover (refer to Figure 2-2).

6. Carefully slide the internal mo-

dem into the slot you have cho­sen, applying even pressure un­til the modem is completely
seated in the slot.

7. Fasten the retaining bracket

with the screw from the slot cover. Make sure the modem is
properly aligned. Store the slot cover for future use.

8. Replace the computer cover and plug in your computer.

9. Connect the telephone cable from the modem (“LINE”

connector) to the telephone wall jack.

10. Optionally connect: 1) your telephone to the modem's

“PHONE” connector, 2) a speaker to the modem's “SPKR”
connector, and 3) a microphone to the modem's “MIC”
connector. Note that the distance between the microphone

and the speaker must be greater than twelve (12) inches
to prevent unpleasant speaker feedback.

11. Turn your computer on. Your modem is now installed.

Figure 2-2
Expansion

Slots

2.3 Software Installation/Configuration

You are now ready to install and configure the commu­nication software. Refer to your software manual for instal­lation procedures. Your software must be configured to
communicate with the modem on the same COM port and
IRQ line used by the modem.

If you are using Microsoft Windows 3.x and have
changed the modem's operating setting from the default COM1/
IRQ4 to COM3/IRQ5 or COM4/IRQ2 to avoid a conflict, you
must use Windows' Control Panel (in the “Main” Group
within Program Manager) to configure Windows to recognize
the new settings before installing any software. In Control
Panel, double-click on Ports. Click once on the icon for the
Com port you have set your modem to. Click the Settings
button. Click the Advanced button. The Base I/O Port

2

Address should already be set by Windows to the COM port
address used by the modem (refer to Table 2-1). Change the
Interrupt Request Line (IRQ) to match the IRQ on the
modem. If you have set the modem to COM4/IRQ2, do not

select IRQ2. You will need to set the IRQ in Control Panel to
IRQ9 for Windows to recognize the modem. (In an operating

system designed for 286 or better machines, IRQ 9 is
equivalent (redirected) to IRQ2.)

After these settings are made, click OK. Click Restart
Now. Windows can now recognize your modem.

We suggest the following communication parameters
when you first use your data communication software.
Consult the software manual for information on using these
and other parameters/features.

38,400 bps; 8 data bits; no parity; 1 stop bit; RTS/
CTS flow control set to “on;” initialization string:
AT&F

The commands used by the modem are compatible
with the command set used by Intel modems. Select an “Intel
144I Faxmodem” type in your data communications soft­ware, select a “Generic Class 1” type in your fax software
and select “Cirrus Logic” in your Voice software.

2.4 COM Port and Interrupt Settings

If your computer is equipped with one or more serial
ports, you will need to change the COM Port setting on the
modem (to either COM 3 or 4), or disable the PC's built-in
COM port.

An IRQ (interrupt request) is a signal generated by an
I/O device that notifies the computer of incoming data. Your
internal modem is capable of accessing IRQs 2, 3, 4, and 5.

I/O devices in your computer cannot share an IRQ with
another device at the same time. Since IRQs can not be

shared at the same time, COM 3 is generally configured to use
IRQ 5, and COM 4 to use IRQ 2. This avoids sharing of IRQs
with COM 1 (IRQ4) and COM 2 (IRQ3).

To change the default COM Port or IRQ settings from
COM 1/IRQ 4 to another setting, locate the Switch Block on
your internal modem (Figure 2-3). Refer to Table 2-1 to
configure the Switch Block to the COM Port and IRQ
combination needed for your application. Any time the

3

COM or IRQ setting for the modem is changed, the
settings in the software must be changed to match.

Figure 2-3 Switch Block SW-1 Location

SW-1

Table 2-1 Switch Block Settings

COM Port IRQ SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6

1 (3F8)
default

2 (2F8) 3 OFF ON OFF ON OFF OFF
3 (3E8) 5 ON OFF OFF OFF OFF ON

4 (2E8) 2(9)** OFF OFF ON OFF OFF OFF

* Use these IRQs only if your software can not address IRQ5 or IRQ2
** When using Windows with the modem set for IRQ2, select IRQ9 in

4 ON ON OFF OFF ON OFF

4* ON OFF OFF OFF ON OFF

3* OFF OFF OFF ON OFF OFF

Control Panel

2.5 Using Fax, Voice, and Speakerphone

Capabilities of the Modem

Your modem has built-in advanced FAX, Voice, and
Speakerphone functions. These functions are accessed
through software. Please consult your FAX/Voice/Speaker­phone software manual about procedures on using these
functions. Note that the modem's FAX/Voice/Speakerphone
commands are used by the software to implement these
functions and are not designed to be used as standalone AT
commands.

Voice functions include recording and playback of
voice prompts (files). To record or playback voice with your
modem, attach a telephone to the RJ-11 jack marked

4

“PHONE” on the back of the modem. Follow specific instruc­tions in the FAX/Voice/Speakerphone software on recording
and playback of voice prompts.

2.6 Testing Your Modem After Installation

In order to test your modem you should be familiar
with your communication software. Load and set up your
communication software and enter into “terminal mode.”
Make sure that the COM Port and IRQ settings of the modem
match the software. Type AT on your terminal screen and
press ENTER. You may see “AATT” or nothing on the
screen. In either case, the modem should respond with an OK
or 0. If it does not, please refer to Section 2.4 for information
on COM Ports and IRQ’s or Section 6 for troubleshooting
information.

2.7 Using Your Modem

The communication software included with your mo­dem product provides a user friendly interface to access the
fax, voice, and data functions of your modem. This software
should be sufficient for all of your communication needs.
There may be times when you need to access the modem
manually via modem commands. Read Section 3 for a
summary description of the modem command set before
manually accessing the modem. You may want to read the
software manual first, however, as the software may already
provide a user friendly method of accessing the functions you
need (i.e. dialing or answering calls).

2.8 Where To Go From Here

You should familiarize yourself with the functions
available from the included software by reading its manual.
You will be accessing most, if not all, of the modem's
functions from this software. You may also use any other
commercially available communication software with the
modem. Read Section 3 ONLY if you are interested in
accessing the modem manually, and not through the included
software. Section 4 and 5 contain reference material, and can
be skipped. If you have difficulties getting your modem to
work, read Section 6, Troubleshooting to find answers to
commonly asked questions and problems.

5

Section Three - AT Command Set

3.1 Executing Commands

Commands are accepted by the modem while it is in
Command Mode. Your modem is automatically in Com­mand Mode until you dial a number and establish a connec­tion. Commands may be sent to your modem from a PC
running communication software or any other terminal de­vices.

Your modem is capable of data communication at rates
of: 300, 1200, 2400, 4800, 9600, 14400, 19200, 38400, and
57600 bps. Make sure your COM port baud rate setting in
your communications software is set to one of the above
speeds.

3.2 Command Structure

All commands sent to the modem must begin with AT
and end with ENTER. All commands may be typed in either
upper or lower case, but not mixed. To make the command
line more readable, spaces may be inserted between com­mands. If you omit a parameter from a command that
requires one, it is just like specifying a parameter of 0.
Example:

ATH [ENTER]

This command causes your modem to hang up.

3.3 Basic AT Commands

In the following listings, all default settings are printed
in bold text.

Command Function

A Manually answer incoming call
A/ Repeat last command executed. Do not precede

AT Appears at the beginning of every command

B_ B0 CCITT mode

D_ 0 - 9, A-D, # and *

A/ with AT or follow with ENTER

line

B1 Bell mode

P pulse dialing

R originate calls in answer mode

6

T touch-tone dialing
W wait for second dial tone
, pause
@ wait for five seconds of silence
! flash
; return to Command Mode after dialing

DS=n Dial one of the four telephone numbers (n=0-

E_ E0 Commands are not echoed

+++ TIES Escape Characters - Switch from Data

H_ H0 Force modem on-hook (hang up)

I_ I0 Display product-identification code

L_ L0 Low speaker volume

M_ M0 Internal speaker off

N_ N0 Connect only at DTE rate

O_ O0 Return to Data Mode

P Set Pulse dial as default
Q_ Q0 Modem sends responses

Sr? r=0-30 Read and display value in register r
Sr=n Set register r to value n (r=0-30; n=0-255)
T Set Tone Dial as default

3) stored in the modem’s non-volatile memory

E1 Commands are echoed

Mode to Command Mode

H1 Force modem off-hook (make busy)

I1 Factory ROM ID
I2 Internal memory test
I3 Device ID
I4 Internal ID

L1 Low speaker volume

L2 Medium speaker volume

L3 High speaker volume

M1 Internal speaker on until carrier detected

M2 Internal speaker always on
M3 Internal speaker on until carrier detected and

off while dialing

N1 Automatic rate negotiation

O1 Return to Data Mode and initiate an equalizer

retrain

Q1 Modem does not send responses

7

V_ V0 Numeric responses

X_ X0 Hayes Smartmodem 300 compatible

Y_ Y0 Modem does not send or respond to break

Z_ Z0 Reset and retrieve active configuration

V1 Word responses

responses/blind dialing

X1 Same as X0 plus all CONNECT responses/

blind dialing
X2 Same as X1 plus dial tone detection
X3 Same as X1 plus busy signal detection/blind

dialing

X4 All responses and dial tone and busy signal

detection

signals

Y1 Modem sends break signal for four seconds

before disconnecting

profile 0

Z1 Reset and retrieve active configuration

profile 1

3.4 Extended AT Commands

&C_ &C0 Force Carrier Detect Signal High (ON)

&D_ &D0 Modem ignores the Data Terminal Ready

&F_ &F Recall factory default configuration
&G_ &G0 Guard tone disabled

&M_ &M0 Asynchronous operation
&P_ &P0 United States setting for off-hook (make) -

&S_ &S0 Force DSR Signal High (ON)

&C1 Turn on Carrier Detect signal when remote

carrier signal is present

signal
&D1 Modem returns to Command Mode after DTR

toggle

&D2 Modem hangs up, returns to the Command

Mode after DTR toggle

&D3 Resets modem after DTR toggle

&G1 550 Hz guard tone
&G2 1800 Hz guard tone

to-on-hook (break) ratio

&P1 UK and Hong Kong off-hook (make)-to-on-

hook (break) ratio

&S1 DSR is off in command mode, on in on-line

8

mode

&T_ &T0 Ends test in progress

&U_ &U0 Enable Trellis Coding @ V.32

&V_ &V 0 Displays Active and Stored Profile 0

&W_ &W0 Stores the active profile as Configuration

&Y_ &Y0 Configuration Profile 0 active upon Power

&Zn=x n=0-3 Store telephone number x into non-volatile

%E_ %E0 V.22bis auto-retrain disabled

%G_ %G0 Enable Auto Fall Forward/Back

&T1 Perform Local Analog Loopback Test
&T3 Perform Local Digital Loopback Test
&T4 Grant Remote Digital Loopback Test

request by remote modem
&T5 Deny Remote Digital Loopback Test request

by remote modem
&T6 Perform a Remote Digital Loopback Test
&T7 Perform a Remote Digital Loopback Test and

Self-Test
&T8 Perform Local Analog Loopback Test and

Self-Test

&U1 Disable Trellis Coding @ V.32

&V1 Displays Active and Stored Profile 1

Profile 0
&W1 Stores the active profile as Configuration

Profile 1

on or reset

&Y1 Configuration Profile 1 active upon Power on

or reset

RAM

%E1 V.22bis auto-retrain enabled

%G1 Disable Auto Fall Forward/Back

3.5 MNP/V.42/V.42bis Commands

%An n=0- Set auto-reliable fallback character to n (where

%C_ %C0 Disable MNP Class 5 data compression

\A_ \A0 64-character maximum MNP block size

127 n = 0 to 127,ASCII). Requires the \C2 setting

%C1 Enable MNP Class 5 data compression

\A1 128-character maximum MNP block size
\A2 192-character maximum MNP block size

\A3 256-character maximum MNP block size

9

\Bn n=1-9 Send a 1/10 second line break to the modem,

\C_ \C0 Do not buffer data during LAPM/MNP

\G_ \G0 Disable DCE flow control

\J_ J0 Disable serial port data rate adjustment

\Kn n=0-5 Set break control, where n= 0 to 5. Default

\N_ \N0 Normal data-link only

\O Initiate reliable link during a normal link
\Q_ \Q0 Turn off flow control

\Tn Inactivity timer, where n = 0 to 90 minutes.

\U Accept reliable link during a normal link
\V_ \V0 Do not send extended responses

\X_ \X0 Process XON/XOFF but don’t pass through

where n = 1 to 9. At normal connect, the

default is 3

handshaking

\C1 Buffer all data for 4 seconds, until receiving

200 characters or until a packet is detected
\C2 Do not buffer data; switch to normal mode

when fallback character is detected

\G1 Enable DCE flow control

(keep high data rate between DTE and

modem, regardless of modem-to-modem

data rate)

J1 Enable serial port data rate adjustment so

serial data rate automatically adjusts to match

the modem-to-modem data rate

is 5

\N1 Direct data-link only
\N2 MNP data link only

\N3 V.42/MNP/Normal data link

\N4 V.42 data link only

\Q1 XON/XOFF software flow control
\Q2 CTS signal unidirectional hardware flow

control

\Q3 RTS/CTS signal bi-directional hardware

flow control

Default is 0

\V1 Send extended response set 1

\V2 Send extended response set 2

\X1 Process XON/XOFF and pass through

10

\Y Switch to reliable link from normal link
\Z End the reliable connection and switch to

-J -J0 Disable error control detection phase

"H "H0 V.42bis data compression disabled

"On n=6- Set maximum V.42bis data block size to n.

normal operation

-J1 Enable error control detection phase

"H1 Can send but not receive V.42bis data

compression
"H2 Can receive but not send V.42bis data

compression

"H3 Bidirectional V.42bis data

compression enabled

250 Default is 16

3.6 Fax Class 1 Commands

+FAA=n Data/Fax auto answer enable. Default is 0
+FAE=n Data/Fax auto answer enable. Default is 0
+FCLASS? Returns current operating mode
+FCLASS=n Sets operating mode
+FCLASS=? Returns available supported modes
+FMFR? Identify modem manufacturer
+FMDL? Identify product model
+FPREV? Identify product revision
+FRH=<mod> Receive HDLC data
+FRHM=<mod>Receive data
+FRS=<time> Wait for silence
+FRTn Fax receive test command
+FTH=<mod> Transmit HDLC data
+FTM=<mod> Transmit data
+FTS=<time> Stop transmission and pause
+FTTn Fax transmit test command

3.7 Voice Mode Commands

#VBP Generate beep tone
#VCL=n Voice mode selection. Default is 0
#VCSD=n Command mode silence detection. Default is 0
#VGPS=n Input pin function selection. Default is 0
#VGPC=n Input pin character selection. Default is 0
#VIN Read general purpose input pins
#VIP=n Initialize parameter. Default is 0
#VLN=n Relay/speaker control. Default is 0
#VOUT=n Write to output pins. Default is 0

11

#VPH Telephone emulation mode.
#VPL=n Play level. Default is 127
#VPY Play mode
#VRD Record mode
#VRL=n Recording level. Default is 127
#VSL=n Recording silence threshold level. Default

#VSM=n Sampling mode. Default is CL1
#VSQT=n Record mode “q” silence time. Default is 60
#VSR=n Sampling rate. Default is 9600
#VSST=n Record mode “s” silence time. Default is 60

is 127

Setion Four - S Registers

Your modem has 35 registers, designated S0 through
S30, S37, S90, S108, and S109. Table 4-1 shows the regis­ters, their functions, and their default values. Some registers
can have their values changed by commands. If you use a
command to change a register value, the command remains
in effect until you turn off or reset your modem. Your modem
then reverts to the operating characteristics specified in its
non-volatile memory. Refer to Section 3 for information on
how to use the AT commands to manipulate the S registers.

Table 4-1 S - Registers

Register Function Range/units Default

S0 Auto-answer Ring 0-255/rings 0
S1 Ring counter 0-255/rings 0
S2 Escape code character 0-127/ASCII 43
S3 Carriage return character 0-127/ASCII 13
S4 Line feed character 0-127/ASCII 10
S5 Backspace character 0-32, 127/ASCII 8
S6 Dial tone wait time 0-255/seconds 2
S7 Remote carrier wait time 1-255/seconds 30
S8 Comma pause time 0-255/seconds 2
S9 Carrier detect time 0-255/0.1 second 6
S10 Carrier loss time 0-255/0.1 second 14
S11 Touch-tone dialing speed 50-255/0.001 second 70
S12 Esc. character detect time 0-255/0.02 second 50
S13 Reserved
S14 Echo, response, dialing, Bit-mapped

originate/answer

S15 Reserved
S16 Modem test options Bit-mapped

12

S17 Reserved
S18 Modem test timer 0-255/seconds 0
S19 Reserved
S20 Reserved
S21 DTR, DCD, DSR, and Bit-mapped

Long Space Disconnect

S22 Speaker and response Bit-mapped
S23 RDL, DTE data rate, Bit-mapped

parity,and guard tone

S24 Reserved
S25 DTR delay 0-100/seconds 5
S26 RTS/CTS delay interval 0-255/0.01 second 1
S27 Async operation, CCITT/ Bit-mapped

Bell mode

S28 Reserved
S29 Reserved
S30 Sleep mode time 0-90/seconds 10
S37 Maximum line speed 0-11 0
S90 Disconnect timer 0-255/seconds 0
S108 Retrain options 0-3 2
S109 Line Speed permitted 2-62 62

Section Five - Result Codes

BASIC RESPONSE CODES

OK 0 CONNECT 1
RING 2 NO CARRIER 3
ERROR 4 CONNECT 1200 5
NO DIALTONE 6 BUSY 7
NO ANSWER 8 CONNECT 2400 10
CONNECT 4800 11 CONNECT 7200 1 2
DATA 13 CONNECT 9600 14
FAX 15 CONNECT 12000 1 6
CONNECT 14400 1 7 +FCERROR +F4

MODIFIED RESPONSE CODES (\V1)

CONNECT 300/REL 22 CONNECT 1200/REL 24
CONNECT 2400/REL 25 CONNECT 4800/REL 26
CONNECT 7200/REL 27 CONNECT 9600/REL 28
CONNECT 12000/REL 29 CONNECT 14400/REL 30

EXTENDED RESPONSE CODES (\V2)

CONNECT 300/REL-MNP 32
CONNECT 1200/REL-MNP 34
CONNECT 2400/REL-MNP 35
CONNECT 4800/REL-MNP 36

13

CONNECT 7200/REL-MNP 37
CONNECT 9600/REL-MNP 38
CONNECT 12000/REL-MNP 39
CONNECT 14400/REL-MNP 40
CONNECT 300/REL-MNP 5 42
CONNECT 1200/REL-MNP 5 44
CONNECT 2400/REL-MNP 5 45
CONNECT 4800/REL-MNP 5 46
CONNECT 7200/REL-MNP 5 47
CONNECT 9600/REL-MNP 5 48
CONNECT 12000/REL-MNP 5 49
CONNECT 14400/REL-MNP 5 50
CONNECT 1200/REL-LAPM 54
CONNECT 2400/REL-LAPM 55
CONNECT 4800/REL-LAPM 56
CONNECT 7200/REL-LAPM 57
CONNECT 9600/REL-LAPM 58
CONNECT 12000/REL-LAPM 59
CONNECT 14400/REL-LAPM 60
CONNECT 1200/REL-LAPM V.42BIS 64
CONNECT 2400/REL-LAPM V.42BIS 65
CONNECT 4800/REL-LAPM V.42BIS 66
CONNECT 7200/REL-LAPM V.42BIS 67
CONNECT 9600/REL-LAPM V.42BIS 68
CONNECT 12000/REL-LAPM V.42BIS 69
CONNECT 14400/REL-LAPM V.42BIS 70

Section Six - Troubleshooting

This section describes some of the common problems
you may encounter while using your modem. If you can not
resolve your difficulty after reading this chapter, contact your
dealer or vendor for assistance.

Modem does not respond to commands.

1. Make sure the modem is not configured with a conflicting

COM port and IRQ setting (see Section 2.4). Your modem
can not be configured as COM1 (default) if another device in
your system is also configured as COM1. Similarly, IRQ
settings may not overlap.

2. Make sure the communication software is configured to

“talk” to the modem on the correct COM port and IRQ setting
(same COM port and IRQ setting as the modem). Your
communication software must know which address your
modem is using in the system in order to pass data to it.

14

Similarly, IRQ settings must be set correctly to receive data
from the modem.

3. Make sure that your modem is initialized correctly. Your

modem may have been initialized to not display responses.
You may factory-reset the modem by issuing AT&F and
press ENTER. The factory default allows the modem to
display responses after a command has been executed.

4. Make sure the baud rate setting in your software is set to

57600, 38400, 19200, 14400, 9600, 2400, 1200, or 300 bps.
An incorrect baud rate prevents the modem from operating
properly.

Modem does not dial.

1. Make sure the modem is connected to a working phone line.

Replace the modem with a working phone to ensure that the
phone line is working.

2. Make sure the phone line is connected to the jack marked

“LINE.” Incorrect connection prevents the modem from
operating properly. Refer to Section 2.2 for modem connec­tion instructions.

Modem dials but does not connect.

1. Make sure the IRQ setting is identical on both the modem

AND the software. Modem and software must be configured
identically.

2. Make sure the phone line is working properly. Replace the

modem with a regular phone and dial the number. If the line
sounds noisy, you may have difficulty connecting to the
remote device.

Modem makes a connection but no data appears
on your screen.

1. The remote system may be waiting to receive your data before

it begins. Try pressing the ENTER key a few times.

2. Make sure the correct data format (data bits, stop bits, and

parity bits) and flow control (RTS/CTS) method are being
used.

3. Make sure the correct terminal emulation mode is being used

(see communication software manual).

4. Make sure the modem is not sharing an IRQ or COM port with

another device (see Section 2.4).

High pitch tone is heard whenever you answer the
phone.

1. Make sure Auto-Answer is turned off. Your modem is factory

configured to NOT auto-answer. Issue AT&F to factory reset
your modem.

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Modem experiences errors while communicating
with a remote modem.

1. Make sure the DTE speed is the same as the modem connec-

tion speed when in Direct Mode (\N1 command in effect).

2. Make sure the remote system and your modem use the same

communication parameters (i.e., baud rate, data bit length,
parity, and stop bit).

3. Make sure RTS/CTS hardware flow control is enabled and

XON/XOFF software flow control is disabled in the commu­nication software.

4. Make sure the data speed is not faster than your computer's

capability. Most IBM compatibles are capable of 19,200 bps
under DOS and Windows. Operating at higher speeds under
Windows requires a faster CPU (386/486 or better).

Modem experiences bursts of errors or suddenly
disconnects while communicating with a remote
modem.

1. Make sure Call Waiting is turned off.

2. Make sure the phone line does not exhibit excess noise.

Modem exhibits poor voice record or playback.

1. Make sure the correct modem type is selected in the Voice/

FAX software. Use “Cirrus Logic” or similar selection. Do
not select “Rockwell or Rockwell ICS” configuration.

Section Seven - Specifications

CCITT/Bell Std. V.42bis, V.42, V.32bis, V.32, V.29,

MNP protocols: MNP 5, 4, 3, 2
Host Interface: 8 bit PC bus
COM ports: 1, 2, 3, 4
IRQ lines: 2, 3, 4, 5
FAX Group: Group III Send/Receive Standard
FAX Command set: EIA/TIA-578 Service Class 1
Voice Command set: Cirrus Logic
Escape Detection: TIES Escape Sequence
Transmit level: -12 dBm +/- 1 dB
Receiver Sensitivity: -40 dBm
UART: 16550 compatible
Data format: 300-57600 bps (8N1, 7E1,7E2,7O1,7O2)
Power: 0.75 W

V.27ter, V.22bis, V.22, V.21, V.17,
Bell212/103

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Temperature: 0 to 55 degrees C (Operating); -20 to 80

degrees C (Non-operating)

Section Eight - Support and Service

In the unlikely event you experience difficulty in the use of this
product, we suggest you: (1) consult the Troubleshooting section
of this guide and (2) consult with your dealer. To obtain service for
this product, follow the Return Merchandise Authorization Proce­dure as outlined in the Warranty card.

Section Nine - FCC , DOC & Other Notices

9.1 FCC Compliance

This equipment complies with Part 68 of the FCC Rules. On this
equipment is a label that contains, among other information, the
FCC registration number and Ringer Equivalence Number (REN)
for this equipment. You must, upon request, provide this informa­tion to your telephone company.

If your telephone equipment causes harm to the telephone net­work, the Telephone Company may discontinue your service
temporarily. If possible, they will notify 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 may make changes in its facilities,
equipment, operations, or procedures that could affect proper
operation of your equipment. If they do, you will be notified in
advance to give you an opportunity to maintain uninterrupted
telephone service.

The FCC prohibits this equipment to be connected to party lines or
coin-telephone service.

In the event that this equipment should fail to operate properly,
disconnect the equipment from the phone line to determine if it is
causing the problem. If the problem is with the equipment, discon­tinue use and contact your dealer or vendor.

The FCC also requires the transmitter of a FAX transmission be
properly identified (per FCC Rules Part 68, Sec. 68.381 (c) (3)).

9.2 FCC Class B Statement

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

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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 the 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

Notice: 1) Shielded cables, if any, must be used in order to comply
with the emission limits. 2) Any change or modification not
expressly approved by the Grantee of the equipment authorization
could void the user’s authority to operate the equipment.

9.3 DOC Compliance Information

NOTICE: The Canadian Department of Communications label

identifies certified equipment. This certification means that the
equipment meets certain telecommunications network protective,
operational and safety requirements. The Department does not
guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users ensure that it is permissible
to be connected to the facilities of the local telecommunications
company. The equipment must also be installed using an accept­able method of connection. The customer should be aware that
compliance with the above conditions may not prevent degrada­tion of service in some situations.

Repairs to certified equipment should be made by an authorized
Canadian maintenance facility designated by the supplier. Any
repairs or alterations made by the user to this equipment, or
equipment malfunctions, may give the telecommunications com­pany cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical
ground connections of the power utility, telephone 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

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themselves, but should contact the appropriate electric inspection
authority, or electrician, as appropriate.

NOTICE: The Load Number (LN) assigned to each terminal
device denotes the percentage of the total load to be connected to
a telephone loop which is used by the device, to prevent overload­ing. The termination on a loop may consist of any combination of
devices subject only to the requirement that the sum of the Load
Numbers of all the devices does not exceed 100.

9.4 Disclaimer, Copyright, And Other Notices

The information contained in this manual has been validated at the
time of this manual's production. The manufacturer reserves the
right to make any changes and improvements in the product
described in this manual at any time and without notice. Conse­quently the manufacturer assumes no liability for damages in­curred directly or indirectly from errors, omissions or discrepan­cies between the product and the manual.

All registered trademarks are the property of their respective
owners.

Copyright © 1995 All rights reserved. No reproduction of this
document in any form is permitted without prior written authori­zation from the manufacturer.

First Edition GZ/DR - Version 1.1

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