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 “Intel144I 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)3OFFONOFFONOFFOFF
3 (3E8)5ONOFFOFFOFFOFFON
4 (2E8)2(9)** OFFOFFONOFFOFFOFF
* 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
4ONONOFFOFFONOFF
4*ONOFFOFFOFFONOFF
3*OFFOFFOFFONOFFOFF
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 softwareshould 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, and57600 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.
CommandFunction
AManually answer incoming call
A/Repeat last command executed. Do not precede
ATAppears at the beginning of every command
B_B0CCITT mode
D_0 - 9, A-D, # and *
DS=nDial one of the four telephone numbers (n=0-
E_E0Commands are not echoed
+++TIES Escape Characters - Switch from Data
H_H0Force modem on-hook (hang up)
I_I0Display product-identification code
L_L0Low speaker volume
M_M0Internal speaker off
A/ with AT or follow with ENTER
line
B1Bell mode
Ppulse dialing
Roriginate calls in answer mode
Ttouch-tone dialing
Wwait 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
E1Commands are echoed
Mode to Command Mode
H1Force modem off-hook (make busy)
I1Factory ROM ID
I2Internal memory test
I3Device ID
I4Internal ID
L1Low speaker volume
L2Medium speaker volume
L3High speaker volume
M1Internal speaker on until carrier detected
7
M2Internal speaker always on
M3Internal speaker on until carrier detected and
off while dialing
N_N0Connect only at DTE rate
O_O0Return to Data Mode
PSet Pulse dial as default
Q_Q0Modem sends responses
Sr?r=0-30 Read and display value in register r
Sr=nSet register r to value n (r=0-30; n=0-255)
TSet Tone Dial as default
V_V0Numeric responses
X_X0Hayes Smartmodem 300 compatible
Y_Y0Modem does not send or respond to break
Z_Z0Reset and retrieve active configuration
N1Automatic rate negotiation
O1Return to Data Mode and initiate an equalizer
retrain
Q1Modem does not send responses
V1Word responses
responses/blind dialing
X1Same as X0 plus all CONNECT responses/
blind dialing
X2Same as X1 plus dial tone detection
X3Same as X1 plus busy signal detection/blind
dialing
X4All responses and dial tone and busy signal
detection
signals
Y1Modem sends break signal for four seconds
before disconnecting
profile 0
Z1Reset 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_&FRecall factory default configuration
&G_&G0 Guard tone disabled
&M_&M0 Asynchronous operation
&P_&P0 United States setting for off-hook (make) -
&S_&S0Force 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
&P1UK and Hong Kong off-hook (make)-to-on-
hook (break) ratio
&S1DSR 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
%Ann=0- Set auto-reliable fallback character to n (where
%C_%C0 Disable MNP Class 5 data compression
\A_\A064-character maximum MNP block size
\Bnn=1-9 Send a 1/10 second line break to the modem,
\C_\C0Do not buffer data during LAPM/MNP
\G_\G0Disable DCE flow control
\J_J0Disable serial port data rate adjustment
\Knn=0-5 Set break control, where n= 0 to 5. Default
\N_\N0Normal data-link only
127n = 0 to 127,ASCII). Requires the \C2 setting
%C1 Enable MNP Class 5 data compression
\A1128-character maximum MNP block size
\A2192-character maximum MNP block size
\A3256-character maximum MNP block size
where n = 1 to 9. At normal connect, the
default is 3
handshaking
\C1Buffer all data for 4 seconds, until receiving
200 characters or until a packet is detected
\C2Do not buffer data; switch to normal mode
when fallback character is detected
\G1Enable DCE flow control
(keep high data rate between DTE and
modem, regardless of modem-to-modem
data rate)
J1Enable serial port data rate adjustment so
serial data rate automatically adjusts to match
the modem-to-modem data rate
is 5
\N1Direct data-link only
\N2MNP data link only
\N3V.42/MNP/Normal data link
10
\N4V.42 data link only
\OInitiate reliable link during a normal link
\Q_\Q0Turn off flow control
\TnInactivity timer, where n = 0 to 90 minutes.
\UAccept reliable link during a normal link
\V_\V0Do not send extended responses
\X_\X0Process XON/XOFF but don’t pass through
\YSwitch to reliable link from normal link
\ZEnd the reliable connection and switch to
-J-J0Disable error control detection phase
"H"H0V.42bis data compression disabled
"Onn=6- Set maximum V.42bis data block size to n.
\Q1XON/XOFF software flow control
\Q2CTS signal unidirectional hardware flow
control
\Q3RTS/CTS signal bi-directional hardware
flow control
Default is 0
\V1Send extended response set 1
\V2Send extended response set 2
\X1Process XON/XOFF and pass through
normal operation
-J1Enable error control detection phase
"H1Can send but not receive V.42bis data
compression
"H2Can receive but not send V.42bis data
compression
"H3 Bidirectional V.42bis data
compression enabled
250Default is 16
3.6 Fax Class 1 Commands
+FAA=nData/Fax auto answer enable. Default is 0
+FAE=nData/Fax auto answer enable. Default is 0
+FCLASS?Returns current operating mode
+FCLASS=nSets 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
+FRTnFax receive test command
+FTH=<mod> Transmit HDLC data
+FTM=<mod> Transmit data
+FTS=<time>Stop transmission and pause
+FTTnFax transmit test command
3.7 Voice Mode Commands
#VBPGenerate beep tone
#VCL=nVoice mode selection. Default is 0
#VCSD=nCommand mode silence detection. Default is 0
#VGPS=nInput pin function selection. Default is 0
#VGPC=nInput pin character selection. Default is 0
#VINRead general purpose input pins
#VIP=nInitialize parameter. Default is 0
#VLN=nRelay/speaker control. Default is 0
#VOUT=nWrite to output pins. Default is 0
#VPHTelephone emulation mode.
#VPL=nPlay level. Default is 127
#VPYPlay mode
#VRDRecord mode
#VRL=nRecording level. Default is 127
#VSL=nRecording silence threshold level. Default
#VSM=nSampling mode. Default is CL1
#VSQT=nRecord mode “q” silence time. Default is 60
#VSR=nSampling rate. Default is 9600
#VSST=nRecord 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.
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.
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.
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 RestartNow. 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 “Intel144I 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)3OFFONOFFONOFFOFF
3 (3E8)5ONOFFOFFOFFOFFON
4 (2E8) 2(9)** OFFOFFONOFFOFFOFF
* 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
4ONONOFFOFFONOFF
4*ONOFFOFFOFFONOFF
3*OFFOFFOFFONOFFOFF
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 softwareshould 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, and57600 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.
CommandFunction
AManually answer incoming call
A/Repeat last command executed. Do not precede
ATAppears at the beginning of every command
B_B0CCITT mode
D_0 - 9, A-D, # and *
A/ with AT or follow with ENTER
line
B1Bell mode
Ppulse dialing
Roriginate calls in answer mode
6
Ttouch-tone dialing
Wwait for second dial tone
,pause
@wait for five seconds of silence
!flash
;return to Command Mode after dialing
DS=nDial one of the four telephone numbers (n=0-
E_E0Commands are not echoed
+++TIES Escape Characters - Switch from Data
H_H0Force modem on-hook (hang up)
I_I0Display product-identification code
L_L0Low speaker volume
M_M0Internal speaker off
N_N0Connect only at DTE rate
O_O0Return to Data Mode
PSet Pulse dial as default
Q_Q0Modem sends responses
Sr?r=0-30 Read and display value in register r
Sr=nSet register r to value n (r=0-30; n=0-255)
TSet Tone Dial as default
3) stored in the modem’s non-volatile memory
E1Commands are echoed
Mode to Command Mode
H1Force modem off-hook (make busy)
I1Factory ROM ID
I2Internal memory test
I3Device ID
I4Internal ID
L1Low speaker volume
L2Medium speaker volume
L3High speaker volume
M1Internal speaker on until carrier detected
M2Internal speaker always on
M3Internal speaker on until carrier detected and
off while dialing
N1Automatic rate negotiation
O1Return to Data Mode and initiate an equalizer
retrain
Q1Modem does not send responses
7
V_V0Numeric responses
X_X0Hayes Smartmodem 300 compatible
Y_Y0Modem does not send or respond to break
Z_Z0Reset and retrieve active configuration
V1Word responses
responses/blind dialing
X1Same as X0 plus all CONNECT responses/
blind dialing
X2Same as X1 plus dial tone detection
X3Same as X1 plus busy signal detection/blind
dialing
X4All responses and dial tone and busy signal
detection
signals
Y1Modem sends break signal for four seconds
before disconnecting
profile 0
Z1Reset 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_&FRecall 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
%Ann=0- Set auto-reliable fallback character to n (where
%C_%C0 Disable MNP Class 5 data compression
\A_\A064-character maximum MNP block size
127n = 0 to 127,ASCII). Requires the \C2 setting
%C1 Enable MNP Class 5 data compression
\A1128-character maximum MNP block size
\A2192-character maximum MNP block size
\A3256-character maximum MNP block size
9
\Bnn=1-9 Send a 1/10 second line break to the modem,
\C_\C0Do not buffer data during LAPM/MNP
\G_\G0Disable DCE flow control
\J_J0Disable serial port data rate adjustment
\Knn=0-5 Set break control, where n= 0 to 5. Default
\N_\N0Normal data-link only
\OInitiate reliable link during a normal link
\Q_\Q0Turn off flow control
\TnInactivity timer, where n = 0 to 90 minutes.
\UAccept reliable link during a normal link
\V_\V0Do not send extended responses
\X_\X0Process XON/XOFF but don’t pass through
where n = 1 to 9. At normal connect, the
default is 3
handshaking
\C1Buffer all data for 4 seconds, until receiving
200 characters or until a packet is detected
\C2Do not buffer data; switch to normal mode
when fallback character is detected
\G1Enable DCE flow control
(keep high data rate between DTE and
modem, regardless of modem-to-modem
data rate)
J1Enable serial port data rate adjustment so
serial data rate automatically adjusts to match
the modem-to-modem data rate
is 5
\N1Direct data-link only
\N2MNP data link only
\N3V.42/MNP/Normal data link
\N4V.42 data link only
\Q1XON/XOFF software flow control
\Q2CTS signal unidirectional hardware flow
control
\Q3RTS/CTS signal bi-directional hardware
flow control
Default is 0
\V1Send extended response set 1
\V2Send extended response set 2
\X1Process XON/XOFF and pass through
10
\YSwitch to reliable link from normal link
\ZEnd the reliable connection and switch to
-J-J0Disable error control detection phase
"H"H0V.42bis data compression disabled
"Onn=6- Set maximum V.42bis data block size to n.
normal operation
-J1Enable error control detection phase
"H1Can send but not receive V.42bis data
compression
"H2Can receive but not send V.42bis data
compression
"H3 Bidirectional V.42bis data
compression enabled
250Default is 16
3.6 Fax Class 1 Commands
+FAA=nData/Fax auto answer enable. Default is 0
+FAE=nData/Fax auto answer enable. Default is 0
+FCLASS?Returns current operating mode
+FCLASS=nSets 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
+FRTnFax receive test command
+FTH=<mod> Transmit HDLC data
+FTM=<mod> Transmit data
+FTS=<time>Stop transmission and pause
+FTTnFax transmit test command
3.7 Voice Mode Commands
#VBPGenerate beep tone
#VCL=nVoice mode selection. Default is 0
#VCSD=nCommand mode silence detection. Default is 0
#VGPS=nInput pin function selection. Default is 0
#VGPC=nInput pin character selection. Default is 0
#VINRead general purpose input pins
#VIP=nInitialize parameter. Default is 0
#VLN=nRelay/speaker control. Default is 0
#VOUT=nWrite to output pins. Default is 0
#VSM=nSampling mode. Default is CL1
#VSQT=nRecord mode “q” silence time. Default is 60
#VSR=nSampling rate. Default is 9600
#VSST=nRecord 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.
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.
15
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.
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
16
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
17
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
18
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.