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READ0109.ME
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1995-12-19
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COURIER I-MODEM INTERNAL RELEASE NOTES FOR REVISION 1.0.9
(previous release was 1.0.6)
INSTRUCTIONS FOR INSTALLING NEW CODE TO YOUR I-MODEM:
The program PCSDL is used to load the new firmware into your I-Modem. From
DOS, use the command:
PCSDL -p2 -r38400 -vna1.0.9 -vsd1.0.9 -nnaim -nsdim
Replace -p2 with -p1 if your I-modem is configured as COM1:.
Replace 38400 with 9600, 19200, or 57600 if you wish to load the new firmware at a
speed other than 38400.
For detailed instructions, please see Chapter 6 of I-modem Reference Guide.
AFTER INSTALLING THE NEW FIRMWARE
Use a terminal emulation program to send AT commands to the I-Modem. Send
the following commands to configure the I-Modem for the new firmware:
AT&F1S67=0&W then <Enter>
ATZ! then <Enter>
This will restore the factory default template, set S67 to 0, and write these
changes to NVRAM. The "ATZ!" will do a hard reset of the I-Modem (equivalent
of power-off reset). You may want to make a screen print of your current
settings (ATI4) before flashing this code (this should not be necessary, but
is a good safeguard).
NEW FEATURES/ENHANCEMENTS
1. Internet Mode (Auto Async to Sync PPP) *V2=5
Async to Sync PPP allows you to connect to a synchronous (ISDN)
host through your asynchronous dialer.
If the number you are dialing is not ISDN capable, it will
automatically retry as analog. The I-Modem will first try
a 64000 ISDN connection, then a 56000 ISDN connection, and
lastly an analog modem connection.
The command AT*V2=5 configures the I-Modem for Internet Mode.
The Windows Configuration Manager (version 1.1.0 or later) may
also be used to configure the I-Modem for Internet Mode.
2. V.120 performance improved.
3. In-band busy detection
The I-Modem now detects in-band busy tones in addition to using
signaling information from the telephone network. This feature
allows multiple call set ups to complete faster when the initial
calls are are met with a busy tone, but no signaling information.
Also, calls which travel over older switching equipment or
incorrectly configured switching equipment may be met with a busy
tone, but incorrect or no signaling information. These calls
will return a busy result now.
4. V.34+
The modem emulation of the I-Modem now supports V.34+. V.34+ is
an extension of V.34 which adds 31.2 kbps and 33.6 kbps to the
previous top speed of 28.8 kbps.
There are additional commands and result codes to accomodate V.34+.
New Result Codes
Verbal Numeric
--------------------- -------
CONNECT 31200 151
CONNECT 31200/ARQ 152
CONNECT 31200/V34 153
CONNECT 31200/ARQ/V34 154
CONNECT 33600 155
CONNECT 33600/ARQ 156
CONNECT 33600/V34 157
CONNECT 33600/ARQ/V34 158
New Commands
The &N command for fixing connection rates has been extended to
support the two new speeds
&N15 (31.2 Kbps)
&N16 (33.6 Kbps).