MaxTech Network Card 56K BPS User Manual

High Performance  
K56Plus/V.34+/V.42bis  
56K BPS  
Plug & Play Internal  
FAX/Data Modem  
User's Manual  
Contents  
Section One - Introduction .......................... 1  
Section Two - Installation............................ 1  
Section Three - AT Command Set .............. 7  
Section Four - S Registers........................ 12  
Section Five - Result Codes ..................... 14  
Section Six - Troubleshooting ................... 15  
Section Seven - Support and Service ....... 16  
Appendix A - Specifications ..................... 17  
Appendix C - Notices ................................ 17  
Part #MAN117 Rev. 1.0  
K56Plus/HIS-FM  
 
Section One - Introduction  
This 56 Kbps* Plug and Play FAX/Data Modem  
connects your computer to all popular high speed  
modems available today. The modem incorporates  
“K56Plus” (56Kbps) technology to provide increased  
download speeds using regular telephone lines. The  
modem incorporates Plug and Play for ease of instal-  
lation.  
This manual describes the hardware installation  
procedures for your new modem. Additional informa-  
tion on AT commands and S-registers is provided so  
that your system can be customized for a particular  
operating environment.  
*Note: K56Plus is capable of downloading at 56Kbps.  
However, current FCC regulations limit its speeds to  
53Kbps.  
Section Two - Installation  
This section will provide step by step instructions  
on how to install your new 56 Kbps FAX/Data modem.  
Installation of this modem product is a three-step  
process consists of 1) actual hardware installation, 2)  
plug and play configuration, and 3) communication  
software installation and configuration.  
2.1 Unpacking Your Modem  
Be certain that you have all the items listed  
below. This package contains:  
• A modem  
• A telephone cable  
• User's manual  
Softwareforthemodem  
• Software user's manual  
2.2 What You Need  
You will need:  
1. A phillips-head screw driver  
2. A) A Plug and Play enabled Operating System  
(e.g., Windows 95),  
or  
B) APlugandPlayRevision1.0acompliantPC.  
1
 
Proceed to Section 2.3 now if you have every-  
thing required.  
If you have neither 2A or 2B above, you have two  
options to provide Plug and Play functionality to your  
PC.  
1. Install Windows 95  
or,  
2. If running DOS or Windows 3.x, configure the  
modem using the included modem driver. Instructions  
for installing this driver are included in the text file  
called README.1ST on the Windows 95 driver disk.  
The README.1ST file can be viewed by loading  
it into any wordprocessor or any text editor (i.e. DOS  
EDIT, NOTEPAD). It may also be viewed by using the  
DOS TYPE command. Refer to your word processor  
manual or DOS/Windows references for information  
on loading text files.  
2.3 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 instal-  
lation. Discharge any static electricity from your body  
by touching any bare metal surface of the PC system,  
such as its power supply cover.  
1. Turn off and unplug your computer from the AC  
outlet.  
2. Remove your computer's cover (refer to your  
computer's owner's manual).  
3. Select any available half-card slot, and then re-  
move the slot cover (refer to Figure 2-1).  
Figure 2-1 Expansion Slots  
2
 
4. Carefully slide the internal modem into the slot  
you have chosen, applying even pressure until  
the modem is completely seated in the slot.  
5. 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.  
6. Replace the computer cover and plug in your  
computer.  
7. Connect the telephone cable from the modem's  
LINE connector to the telephone wall jack.  
8. Optionally,connectyourtelephonetothemodem's  
PHONE connector.  
9. Turn your computer on. Your modem is now  
installed.  
2.4 Hardware Configuration (Plug and Play)  
Your modem is configured using the Plug and  
Play (PnP) capabilities of your computer. Plug and  
Play is a set of specifications that define the ability for  
the computer hardware and operating system to auto-  
matically configure all compliant devices that are in-  
stalled, relieving the user of the need to determine  
whichaddressesandinterruptstouseforeachdevice.  
Consult your PC's owner's manual to determine if it is  
PnP Revision 1.0a compliant. You most likely have a  
Plug and Play Revision 1.0a compliant system if it was  
purchased after June 1994 or if the BIOS is dated after  
June 1994.  
Proceed to one of the following sections, de-  
pending on your system's configuration:  
• Section 2.4.1 if you are running Windows  
95 (with or without a Plug and Play PC)  
• Section 2.4.2 if you are running Windows  
3.1x or DOS on a PnP-compliant PC.  
• Section 2.4.3 if you are running DOS or  
Windows 3.1x on a non-PnP PC.  
2.4.1 Configuring in Windows 95  
The version of Windows 95 you have will deter-  
mine which set of dialog boxes is presented to you  
when installing the modem in Windows 95. Proceed to  
one of the following sections, depending on your  
Windows 95's diaglog box:  
3
 
• Section 2.4.1.1 when Windows 95 starts for  
the first time after card installation, it  
detects the modem and it displays the New  
Hardware Found dialog box  
• Section 2.4.1.2 when Windows 95 starts for  
the first time after card installation, it  
detects the modem and it displays the  
Update Device Driver Wizard.  
2.4.1.1 Windows 95 Release 4.00.950  
When Windows 95 starts for the first time after  
cardinstallation,itdetectsthemodemanddisplaysthe  
New Hardware Found dialog box.  
Under New Hardware Found, when asked to  
“Select which driver you want to install for your new  
hardware,” click on “Driver from disk provided by  
hardware manufacturer.” Click “OK.”  
The Install From Disk dialog box now instructs  
you to “Insert the manufacturer's installation disk into  
the drive selected, and then click OK.” Insert the  
modem'sdriverdisketteintothediskdriveandtypeA:\  
(orB:\ifinsertedindriveB)intheCopymanufacturer's  
files from:” box. Click “OK.”  
Windows 95 may request its own installation  
disks or CD-ROM for some files. Insert the Windows  
95 disks or CD-ROM as required. When all necessary  
filesarecopied, themodemisconfigured. Windows95  
will assign the modem a COM port and IRQ line.  
Proceed to Section 2.5.  
2.4.1.2 Windows 95 Release 4.00.950 B  
When Windows 95 starts for the first time after  
cardinstallation,itdetectsthemodemanddisplaysthe  
Update Device Driver Wizard.  
Insert the driver disk into the disk drive and click  
“Next.” Windows will find the driver on the driver disk.  
Click “Finish. Windows 95 may request its own instal-  
lationdisksorCDforsomefiles. InserttheWindows95  
disks or CD as required. When all necessary files are  
copied, the modem is configured. Windows 95 will  
assign the modem a COM port and IRQ line. Proceed  
to Section 2.5.  
4
 
2.4.2 Configuring in a Plug and Play System with-  
out Windows 95  
When this modem is installed in a Plug and Play  
system without Windows 95, the computer's BIOS will  
assign a COM port and IRQ line to the modem.  
Proceed to Section 2.5, Software Installation/  
Configuration.  
2.4.3 Configuring in a Non-Plug and Play System  
ComputerswithoutnativePlugandPlaycapabili-  
ties require the use of the included modem driver. If  
you have not already installed this driver, refer to the  
file README.1ST on the Windows 95 driver disk for  
installation and configuration instructions. Once the  
driver is installed the modem is enabled and config-  
ured during system boot-up. The COM port and IRQ  
settings that are assigned to the modem will be dis-  
played on the screen as the driver is loaded.  
If the PC is running Windows 3.1x, configure  
Windows to properly recognize these modem settings  
byopeningPROGRAMMANAGER|MAIN|CONTROL  
PANEL, click on PORTS and follow Windows 3.1x  
user's manual instructions on configuring the installed  
modem COM port.  
Proceed to Section 2.5, Software Installation/  
Configuration.  
2.5 Software Installation and Configuration  
You are now ready to install and configure the  
communicationsoftware.Refertoyoursoftwaremanual  
for installation procedures.  
Wesuggestthefollowingcommunicationparam-  
eters when you first use your data communication  
software. Consult the software manual for information  
on using these and other parameters/features.  
57,600 bps; 8 data bits; no parity; 1 stop bit;  
RTS/CTSflowcontrolsettoon;initialization  
string: AT&F  
We suggest that a “Generic Class 1” modem  
type should be selected in your fax software.  
5
 
Note that your software must be configured to  
communicate with the modem on the same COM port  
and IRQ line used by the modem.  
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 “AT”, “AATT” or nothing on the screen. In any  
case, the modem should respond with an OK or 0. If it  
does not, either the modem may not have been in-  
stalled properly or the software has not been properly  
configured. Review Sections 2.2-2.5 and be certain  
that the modem and the software have been properly  
installed. If required, refer to Section 6 for additional  
troubleshooting information.  
2.7 Using Your Modem  
The communication software included with your  
modem product provides a user friendly interface to  
accessthefaxanddatafunctionsofyourmodem.This  
software should be sufficient for all of your com-  
munication needs. There may be times when you  
need to access the modem manually via modem  
commands. ReadSection3forasummarydescription  
of the modem command set before manually access-  
ing 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 func-  
tions you need (i.e. dialing or answering calls).  
2.8 Where To Go From Here  
Youshouldfamiliarizeyourselfwiththefunctions  
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  
6
 
contain reference material, and can be skipped. If you  
have difficulties getting your modem to work, read  
Section 6 - Troubleshooting to find answers to com-  
monly 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, 28800, 38400, 57600, and 115200 bps. Make  
sure your COM port baud rate settings in your commu-  
nications 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 param-  
eter 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  
precedeA/withATorfollowwithENTER.  
B_  
B0  
CCITT mode  
B1  
Bell mode  
7
 
D_  
0 - 9, A-D, # and *  
last number redial  
pulse dialing  
touch-tone dialing  
wait for second dial tone  
pause  
L
P
T
W
,
@
!
wait for five seconds of silence  
flash  
;
return to Command Mode after dialing  
DS=n  
Dial one of the four telephone numbers  
(n=0-3) stored in the modem’s non-  
volatile memory.  
E_  
+++  
H_  
I_  
E0  
E1  
Commands are not echoed  
Commands are echoed  
Escape Characters - Switch from Data  
Mode to Command Mode  
H0  
H1  
Force modem on-hook (hang up)  
Force modem off-hook (make busy)  
I0  
I1  
I2  
I3  
I4  
Display product-identification code  
Factory ROM checksum test  
Internal memory test  
Firmware ID  
Reserved ID  
L_  
L0  
L1  
L2  
L3  
Low speaker volume  
Low speaker volume  
Medium speaker volume  
High speaker volume  
M_  
M0  
Internal speaker off  
M1  
Internal speaker on until carrier  
detected  
M2  
M3  
Internal speaker always on  
Internal speaker on until carrier detected  
and off while dialing  
N_  
N0  
Disable Autoscan mode  
N1  
Enable Autoscan mode  
O_  
O0  
O1  
Return to Data Mode  
Return to Data Mode and initiate an  
equalizer retrain  
P
Set Pulse dial as default  
Q_  
Q0  
Modem sends responses  
Q1  
Modem does not send responses  
Sr?  
Read and display value in register r.  
8
 
Sr=n  
T
Set register r to value n (n = 0-255).  
Set Tone Dial as default  
V_  
V0  
Numeric responses  
V1  
Word responses  
W_  
W0  
Report DTE speed only  
W1  
Report line speed, error correction  
protocol, and DTE speed.  
W2  
X0  
Report DCE speed only  
X_  
Hayes Smartmodem 300 compatible  
responses/blind dialing.  
X1  
Same as X0 plus all CONNECT  
responses/blind dialing  
X2  
X3  
Same as X1 plus dial tone detection  
Same as X1 plus busy detection/blind  
dialing  
X4  
All responses and dial tone and busy  
signal detection  
Y_  
Z_  
Y0  
Modem does not send or respond to  
break signals  
Modem sends break signal for four  
seconds before disconnecting  
Y1  
Z0  
Z1  
Reset and retrieve active profile 0  
Reset and retrieve active profile 1  
3.4 Extended AT Commands  
&C_  
&C0 Force Carrier Detect Signal High (ON)  
&C1 Turn on CD when remote carrier is  
present  
&D_  
&D0 Modem ignores the DTR 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  
&F_  
&G_  
&F  
Recall factory default configuration  
&G0 Guard tone disabled  
&G1 Guard tone disabled  
&G2 1800 Hz guard tone  
&K_  
&K0 Disable flow control  
&K3 Enable RTS/CTS hardware flow  
control  
&K4 Enable XON/XOFF software flow control  
9
 
&K5 Enable transparent XON/XOFF flow  
control  
&K6 Enable both RTS/CTS and XON/XOFF  
flow control  
&L_  
&M_  
&P_  
&L0 Modem is set up for dial-up operation  
&M0 Asynchronous operation  
&P0 US setting for off-hook-to-on-hook  
ratio  
&P1 UK and Hong Kong off-hook-to-on-hook  
ratio  
&P2 Same as &P0 setting but at 20 pulses  
per minute  
&P3 Same as &P1 setting but at 20 pulses  
per minute  
&R_  
&S_  
&T_  
&R0 Reserved  
&R1 CTS operates per flow control  
requirements  
&S0 Force DSR Signal High (ON)  
&S1 DSR off in command mode, on in on-line  
mode  
&T0 Ends test in progress  
&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  
&T6 PerformaRemoteDigitalLoopbackTest  
&T7 PerformaRemoteDigitalLoopbackTest  
and Self-Test  
&T8 Perform Local Analog Loopback Test  
and Self-Test  
&V  
&V0 Displays Active and Stored Profiles  
&V1  
Display Last Connection Statistics  
&W_  
&Y_  
&W0 Stores the active profile as Profile 0  
&W1 Stores the active profile as Profile 1  
&Y0 Configuration Profile 0 active upon  
Power on or reset  
&Y1 ConfigurationProfile1activeuponPower  
on or reset  
&Zn=x n=0-3 Store phone number x into non-volatile  
RAM  
10  
 
%E_  
%E0 Disable auto-retrain  
%E1 Enable auto-retrain  
+MS?  
+MS=?  
Displays the current Select Modulation  
settings  
Displays a list of supported Select  
Modulation options  
+MS=a,b,c,d.e,fSelect modulation where: a=0, 1, 2, 3,  
9, 10, 11, 56, 64, 69; b=0-1; c=300-  
56000; d=300-56000; e=0-1; and f=0-  
1. A, b, c, d, e, f default=56, 1, 300,  
56000, 0, 0. Parameter “a” specifies the  
modulation protocol desired where:  
0=V.21, 1=V.22, 2=V.22bis, 3=V.23,  
9=V.32, 10=V.32bis, 11=V.34,  
56=K56FLEX, 64=Bell103, and69=Bell  
212. Parameter “b” specifies automode  
operations where: 0=automode  
disabled, 1= automode enabled with  
V.8/V.32 Annex A. Parameter “c”  
specifies the minimum connection data  
rate (300-56000). Parameter “d”  
specifies the maximum connection rate  
(300-56000); Parameter “e” specifies  
the codec type (0=µ-Law, and 1=A-  
Law). Parameter “f” specifies “robbed  
bit” signaling detection (0=detection  
disabled 1=detection enabled)  
#CID=n n=0 Disable Caller ID  
n=1 Enables Caller ID with formatting (date,  
time, number, name)  
n=2 Enables Caller ID without formatting  
#CID?  
Displays current Caller ID mode  
#CID=?  
Returns Caller ID capabilities of modem.  
3.5 MNP/V.42/V.42bis Commands  
%C_  
%C0 Disable MNP Class 5 and V.42bis data  
compression  
%C1 Enable MNP Class 5 data compression  
only  
%C2 Enable V.42bis data compression only  
%C3 Enable MNP Class 5 and V.42bis data  
compression  
11  
 
&Q_  
\A_  
&Q0 Direct data link only (same as \N1)  
&Q5 V.42 data link with fallback options  
&Q6 Normal data link only (same as \N0)  
\A0  
64-character maximum MNP block size  
128-character maximum MNP block  
size  
\A1  
\A2  
\A3  
192-charactermaximumMNPblocksize  
256-charactermaximumMNPblocksize  
\Bn  
\Kn  
\N_  
Send a 1/10 second line break to the modem,  
where n = 1 to 9. At normal connect, the default  
is 3  
Set break control, where n= 0 to 2. The effect of  
this command depends on the modem’s  
operating condition. Default is 1.  
\N0  
\N1  
\N2  
\N3  
\N4  
\N5  
Normal data-link only  
Direct data-link only  
V.42 or MNP data link only  
V.42/MNP/Normal data link  
V.42 data link only  
MNP data link only  
3.6 Fax Class 1 Commands  
+FAE=n  
+FCLASS=n  
+FRH=n  
+FRM=n  
+FRS=n  
+FTH=n  
+FTM=n  
+FTS=n  
Data/Fax Auto Answer  
Service Class  
Receive data with HDLC framing  
Receive data  
Receive silence  
Transmit data with HDLC framing  
Transmit data  
Stop transmission and wait  
Section Four - S Registers  
Your modem has 41 registers, designated S0  
through S95. Table 4-1 shows the registers, their  
functions, andtheirdefaultvalues. Someregisterscan  
have their values changed by commands. If you use a  
command to change a register value, the command  
remainsineffectuntilyouturnofforresetyourmodem.  
Your modem then reverts to the operating character-  
istics specified in its non-volatile memory. Refer to  
Section 3 for information on how to use the AT com-  
mands to manipulate the S registers.  
12  
 
Table 4-1 S - Registers  
Function Range/units Default  
Register  
S0  
S1  
Auto-answer Ring  
Ring counter  
0-255 /rings  
0-255 /rings  
0
0
S2  
S3  
S4  
S5  
S6  
S7  
S8  
Escape code character  
Carriage return character  
Line feed character  
Backspace character  
Dial tone wait time  
0-127 /ASCII  
0-127 /ASCII  
0-127 /ASCII  
0-32, 127 /ASCII  
2-255 /seconds  
1-255 /seconds  
0-255 /seconds  
43  
13  
10  
8
2
50  
2
Remote carrier wait time  
Comma pause time  
S9  
Carrier detect response time 1-255 /0.1 second  
6
S10  
S11  
S12  
S13  
S14  
Carrier loss time  
Touch-tone dialing speed  
1-255 /0.1 second  
50-255 /milliseconds 95  
14  
Escape character guard time 0-255 /0.02 second  
Reserved  
Echo, response, dialing,  
originate/answer  
Reserved  
Modem tests  
Reserved  
Length of modem tests  
50  
Bit-mapped register  
S15  
S16  
S17  
S18  
Bit-mapped register  
0-255 /seconds  
0
0
S19-20 Reserved  
S21  
CTS, DTR, DCD, DSR and Bit-mapped register  
long space disconnect  
S22  
S23  
Speaker and response  
Remote digital loopback  
request, data rate, parity  
Sleep mode timer  
Bit-mapped register  
Bit-mapped register  
S24  
S25  
S26  
S27  
0-255 seconds  
0-255 /0.01 second  
0
5
1
Data terminal ready delay  
RTS to CTS delay interval 0-255 /0.01 second  
Asynchronous/Bell/CCITT Bit-mapped register  
modes  
S28  
S29  
S30  
S31  
S32  
S33  
Pulse dial, make/break ratio Bit-mapped register  
Flash time  
0-255 /0.01second  
0-255 /10 seconds  
Bit-mapped register  
0-255 /ASCII  
0
0
Disconnect timer  
Autoscan, EC result code  
XON character  
17  
19  
XOFF character  
0-255 /ASCII  
S34-35 Reserved  
S36  
S37  
S38  
S39  
S40  
LAPM failure options  
Reserved  
Hang-up delay  
Flow control options  
MNP options, break types  
block modes  
Bit-mapped register  
7
0-255 /seconds  
Bit-mapped register  
Bit-mapped register 104  
20  
3
S41  
Compression, retrain  
Bit-mapped register 134  
S42-45 Reserved  
S46  
S47  
S48  
Data compression control  
Reserved  
V.42 negotiation options  
136 or 138  
0, 7, or 128  
138  
7
13  
 
S49-81 Reserved  
S82  
Break options  
3, 7, or 128  
128  
S83-85 Reserved  
S86  
Connection failure code  
0, 4, 5, 9, 12, 13, 14  
S87-S90 Reserved  
S91  
S92  
S95  
Transmitattenuation  
Fax attenuation  
Extended result code optionsBit-mapped register  
0-15/dBm  
0-15/dBm  
10  
10  
0
Section Five - Result Codes  
OK  
0
2
4
6
8
CONNECT  
1
3
5
7
9
RING  
ERROR  
NO DIALTONE  
NO ANSWER  
NO CARRIER  
CONNECT 1200  
BUSY  
CONNECT 600  
CONNECT 2400  
CONNECT 9600  
CONNECT 12000  
CONNECT 19200  
CONNECT 34000  
CONNECT 38000  
CONNECT 40000  
CONNECT 44000  
CONNECT 48000  
CONNECT 52000  
CONNECT 56000  
CONNECT 58000  
CONNECT 115200  
10 CONNECT 4800  
12 CONNECT 7200  
14 CONNECT 14400  
16 CONNECT 32000  
166 CONNECT 36000  
168 CONNECT 38400  
169 CONNECT 42000  
171 CONNECT 46000  
173 CONNECT 50000  
175 CONNECT 54000  
177 CONNECT 57600  
178 CONNECT 60000  
11  
13  
15  
165  
167  
17  
170  
172  
174  
176  
18  
179  
19 CONNECT 1200TX/75RX 22  
CONNECT 75TX/1200RX 23 FAX  
33  
40  
DATA  
35 CARRIER 300  
CARRIER 1200/75  
CARRIER 1200  
CARRIER 4800  
CARRIER 9600  
CARRIER 14400  
CARRIER 24000  
CARRIER 28800  
CARRIER 34000  
CARRIER 38000  
CARRIER 42000  
CARRIER 46000  
CARRIER 50000  
CARRIER 54000  
CARRIER 58000  
44 CARRIER 75/1200  
46 CARRIER 2400  
48 CARRIER 7200  
50 CARRIER 12000  
52 CARRIER 21600  
56 CARRIER 26400  
64 CARRIER 32000  
151 CARRIER 36000  
153 CARRIER 40000  
155 CARRIER 44000  
157 CARRIER 48000  
159 CARRIER 52000  
161 CARRIER 56000  
163 CARRIER 60000  
45  
47  
49  
51  
55  
57  
150  
152  
154  
156  
158  
160  
162  
164  
COMPRESSION: CLASS 5 66 COMPRESSION: V.42BIS 67  
COMPRESSION: NONE 69 PROTOCOL: NONE  
70  
80  
PROTOCOL: LAPM  
77 PROTOCOL: ALT  
+FCERROR  
+F4  
14  
 
Section Six - Troubleshooting  
This section describes some of the common  
problemsyoumayencounterwhileusingyourmodem.  
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 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.  
2. 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 com-  
mand has been executed.  
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 2.3  
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. Re-  
place 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. Make sure the correct data format (data bits, stop bits,  
and parity bits) and flow control (RTS/CTS) are being  
15  
 
used.  
2. Make sure the correct terminal emulation mode is  
being used (see communication software manual).  
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  
connection speed when in Direct Mode.  
2. Make sure the remote system and your modem use  
the same communication parameters (speed, parity,  
etc.).  
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 3.X.  
Operating at higher speeds under Windows requires  
a 486 or faster CPU or Windows 95.  
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.  
Section Seven - 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 Proce-  
dure as outlined in the Warranty card.  
16  
 
Appendix A - Specifications  
Communication Std. K56FLEX (56Kbps), V.34,  
V.32bis, V.32, V.29, V.27ter,  
V.22bis, V.23, V.22, V.21, V.17,  
Bell212/103  
Data Compression:  
Error Correction:  
Host Interface:  
COM ports:  
V.42bis/MNP5  
V.42/MNP2-4  
16 bit PC bus  
1, 2, 3, 4  
IRQ lines:  
FAX Group:  
3, 4, 5, 7, 9, 10, 11, 12, 15  
Group III Send/Receive  
Standard  
FAX Command set: EIA/TIA-578 Service Class 1  
Transmit level: -11 dBm +/- 1 dB  
Receiver Sensitivity: -39 dBm (V.34); -43 dBm (all  
other protocols)  
UART:  
Data format:  
Power:  
16550 compatible  
300-115200 bps  
0.75 W  
Temperature:  
Caller ID:  
PnP:  
0 to 55 degrees C (Operating)  
Yes  
Revision 1.0a  
Appendix C - Notices  
FCC Compliance  
This equipment complies with Part 68 of the FCC Rules. On  
this equipment is a label that contains, among other informa-  
tion, 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 is not 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.  
17  
 
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 ven-  
dor.  
The FCC also requires the transmitter of a FAX transmission  
be properly identified (per FCC Rules Part 68, Sec. 68.381 (c)  
(3)).  
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 instal-  
lation. 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 inter-  
ference will not occur in a particular installation. If this  
equipment does cause harmful interference to radio or tele-  
vision 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 modifica-  
tion not expressly approved by the Grantee of the equipment  
authorization could void the user’s authority to operate the  
equipment.  
DOC Compliance Information  
NOTICE: The Canadian Department of Communications  
label identifies certified equipment. This certification means  
that the equipment meets certain telecommunications net-  
work 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  
18  
 
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 autho-  
rized Canadian maintenance facility designated by the sup-  
plier. Any repairs or alterations made by the user to this  
equipment, or equipment malfunctions, may give the tele-  
communications company cause to request the user to  
disconnect the equipment.  
Users should ensure for their own protection that the electri-  
cal 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 connec-  
tions 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 con-  
nected 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.  
UL Notice  
Caution: This internal modem adapter is to be installed in UL  
Listedcomputersonly,Alwaysdisconnectthemodemadapter  
from the telephone system during installation or when the  
cover is removed from the computer.  
First Edition  
GZ/DR - Version 1.0  
19  
 

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