3Com 3COMIMPACT IQ, Руководство пользователя

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Restoring the 3C882 ISDN Modem to Autobaud 8-9
Restoring the 3C882 ISDN Modem to Autobaud
The 3C882 ISDN modem autobauds up to 115 Kbps (by
default) to match your computer’s COM port speed. If you
fixed the baud rate of the modem using the AT$B command
and the COM port speed of the connected computer no
longer matches that rate, or if you have installed a serial port
card that allows for transfers up to 230.4 Kbps and have set
the baud rate accordingly, then you will not be able to
communicate with the 3C882 ISDN modem. You can restore
the 3C882 ISDN modem to autobaud mode by following
these steps:
1 Use terminal emulation software on the connected
computer to set the software at a low baud rate, such as
1200 baud.
2
Power up the 3C882 ISDN modem and observe the LEDs.
When the Test LED goes off, observe the B1 and B2 LED
lights. These LEDs should flash momentarily. Immediately
type the letter “a” repeatedly from your keyboard, until you
see the letter “a” appear on the screen. (This may take
approximately 5 seconds.) When you see the letter “a”, it
indicates that 3C882 ISDN modem is now running autobaud
and will adapt itself to the baud rate of your computer's COM
port.
3 Send the command AT&W to the 3C882 ISDN modem to
save this change.
1022 Cannot remove TURBOBUF from the
SYSTEM.INI file. Try to remove these items
manually and/or contact 3Com
Technical Support.
Table 8-2 Microkey Error Codes and Their Meaning
Error Code Possible Cause Solution