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Courier I-modem 2.2
README FILE
Copyright 1997 3Com/U.S. Robotics
Web-posted 10/97
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LATEST ADDITIONS
After documentation was printed, some changes occurred in
the I-modem 2.2 code.
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1. Users of internal I-modems using Windows NT 4.0
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To upgrade from code version 2.1.10 to code version 2.2.2
on the internal I-Modem you must use PCSDL.
Windows NT users with internal I-modems should perform the
following actions:
1 Insert an MS-DOS boot disk into your PC.
2 Reboot your PC to MS-DOS.
3 Run PCSDL according to the procedure explained
below in section "Upgrading with PCSDL."
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2. Remote access users
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While entering your remote access password, watch the
screen and make sure that each keystroke you press
appears as a period ("."). If you press a key and the
I-modem does not display a period, re-press the key
until the I-modem displays a period.
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3. Hard reset and DCD
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During hard reset (ATZ!), DCD may come high for 2
seconds.
This may affect you if you are using an application that
monitors DCD during disconnect.
NEW FEATURES WITH I-MODEM 2.2
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1. Help Screen Improvements
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When using the German 1TR6 switch (when *W= 5) the following
differences occur to the help screens:
For the ATI12 help screen:
- Analogue telephony calls routed to Data Port (S67.3 = 1)
- 3.1kHz telephony calls routed to Data Port (S68.4 = 1)
- Analogue telephony calls routed to the ADP (S67.3 = 0)
- 3.1kHz telephony calls routed to the ADP (S68.4 = 0)
Note: 1)If a 3.1kHz audio call is made from a NET3 switch
to a 1TR6 switch, the call will be treated as an
analogue call. If a call is made from a 1TR6 switch
to a NET3 switch, the call will also be treated as
an analogue call.
2)If a speech call is made from a NET3 switch to a
1TR6 switch, the call will be treated as a 3.1kHz
call. If a call is made from a 1TR6 switch to a NET3
switch, the call will also be treated as an 3.1kHz call.
For the ATS$ help screen, S67 and S68 updates are
(** signifies differences):
- S67 Misc. ISDN Configuration
1 = Reserved
2 = Fix Connection Rate for Digital Calls
4 = Connect at 64K (else 56K)
**8 = Route Analogue Telephony Calls to Data Port
16 = Reserved
32 = Map LEDs to B-Channels
64 = Disable B-Chan. LED Blink
128 = Reserved
- S68 ISDN Universal Connect
1 = Disallow Analogue Connects Over Digital Connections
2 = Disable Enhanced Universal Connect
4 = Disable Turbo PPP
8 = Disable Multilink Turbo PPP
**16 = Route ISDN 3.1kHz Telephony Calls to Data Port
32 = Reserved
64 = Disable Dynamic BW allocation
128 = Reserved
If the switch is not 1TR6, the ATS$ screen for S80
will be (** signifies differences):
-S80 International Controls
1 = Disable V.120 LLC
2 = Send *Pn as Calling Party #
**4 = Force Modem Calls as Speech
8 = Enable V.110 at 38400 bps
16 = Insert <CR><LF> between RING and
Calling Party #
32 = Disable V.110 LLC
64 = Reserved
128 = Reserved
If the switch is set to 1TR6 (*W=5), the s80 help
screen be (** signifies differences):
-S80 International Controls
1 = Disable V.120 LLC
2 = Send *Pn as Calling Party #
**4 = Force Modem Calls as ISDN 3.1kHz
Telephony
8 = Enable V.110 at 38400 bps
16 = Insert <CR><LF> between
RING and Calling Party #
32 = Disable V.110 LLC
64 = Reserved
128 = Reserved
For the AT*$ screen:
- *V1=n Voice Bearer Capability (DN0)
n=0 Analogue Telephony
n=1 ISDN 3.1kHz Telephony
For the other switch types (NET3,VNX etc.), the help screens
remain the same.
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2. General Features and Improvements
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- x2 technology in server and symmetric modes
- Turbo-PPP including Host Mode
- Extended V.110 connectivity up to 38,400bps
- Autodetection of X.75/V.120 frames on incoming calls
- XMODEM software downloads
- Extended Party Number Identification (Caller ID)
- Improved Configuration Manager
- Extended Configuration Manager DN Setup
- Improved Configuration Manager online help
- 230kbps DTE rate
- 32-bit CAPI 2.0 DLL
- Dynamic Bandwidth Allocation
See the Courier I-modem documentation for more information
about these features and how to implement them.
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3. Upgrading with PCSDL
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3Com recommends that you use PCSDL to upgrade your
I-modem if you are using an MS-DOS-based computer.
- What happens first?
3Com recommends that you reboot your PC to DOS
mode before using PCSDL.
- Using PCSDL
1 Go to the DOS prompt.
2 Change to the directory that you placed the PCSDL file.
3 Run PCSDL by typing PCSDL <Enter> in conjunction with the
following switches.
Example for external I-modems:
PCSDL -p1 -r115200 -vNA2.1.10 -vSD2.1.10 -nSDie -nNAie
Example for internal I-modems:
PCSDL -p1 -r115200 -vNA2.1.10 -vSD2.1.10 -nSDim -nNAim -b
PCSDL.EXE checks its code. If an error message appears,
the operation is terminated; download the file again.
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REQUIRED SWITCHES:
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-p COM Port: 1, 2, 3 or 4
-r Baud Rate: 2400, 9600, 19200, 38400, 57600 or 115200
-v <NA/NI>n.n.n NAC/NIC Operation Code Version: n=0-99
-n SD?? Filename Prefix: ?=ASCII
-n <NA/NI>?? Operation Code Filename Prefix: ?=ASCII
-v SDn.n.n Software Download Version: n=0-99
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OPTIONAL SWITCHES:
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-I IRQ 3(default COM2/4), 4(default COM1/3), 5, or 7
-d Directory Path Name: default = current directory
-b Disable UART's FIFOs (necessary for downloading
to internal models)
4 A prompt asks if you want to "Download Using These
Settings? (Y/N)."
Enter "Y" to continue or "N" to abort. Once you have accepted
the settings, the software download begins. If the MS-DOS
prompt displays "Modem reports download successful" and
the MR LED lights up, you have successfully upgraded your
Courier’s software.
**Note: If you are unable to download the code as explained
above:
- Power the I-modem off.
- Set DIP switch 1 to the OFF position to set initial
DIP switch settings to FACTORY defaults.
- Power the I-modem on to load these settings
- Set the baud rate as 57600 instead of 115200.
- Follow steps 1-4.
- Power the I-modem off.
- Set the DIP switches to their previous settings.
- Power the Courier on.
- Continue with step 5.
5 Send the following commands to I-modem:
AT&F&C1&D2E1V1Q0<CR>
ATS0=1S14=1S67=14S68=0S69=0<CR>
AT*W=4<CR> (for 1TR6 switches use *W=5, for VNx
switches use *W=6)
AT*P1=<CR>
AT*P2=<CR>
AT*P=0<CR>
AT*C4<CR>
AT*R4<CR>
AT&W<CR>
ATZ!<CR>
**NOTE: The I-modem may have it's local echo initially
disabled so you will not be able to see what you are
typing Use ATE1 to enable local echo.
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4. Important points to remember
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- Passwords
If you are a Windows 95 user:
* DO NOT enable encrypted password in the dial-up
networking setup
* If your server supports encrypted passwords, I-modem
will encrypted passwords to the server and
clear-text passwords to Windows 95.
* If your server does NOT support encrypted passwords,
use clear-text passwords.
If you are a Windows NT user:
* Set your authentication to clear-text passwords.
- Disable FIFOs for internal I-modems over Windows NT.
- I-modem does not support pulse dialling over the ADP.
S80.1=1 allows the I-modem to send it's CALLING PARTY
NUMBER to the remote user.
**NOTE: This will prevent some UK switches from sending the
I-modem a dial tone. This is noticeable on the ADP
and can be disabled with S80.1=0
- MDMEURCR.INF supports DTE rates up to 115.2 kbps.
This file will work with high speed serial cards,
but only at speeds up to 115.2 kbps. To obtain
throughput speeds of 230.4 kbps, you must use
CR230KEU.INF in conjunction with a serial card
that supports 230.4 kbps. If you use the CR230KEU.INF
with a system that does not support 230.4 kbps DTE
rate, your I-modem will not function properly.
Most PCs do not support 230 kbps DTE rate; consult
the documentation that came with your PC or interface
card to determine if the 230.4 kbps DTE rate is supported.
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.