Restoring the 3C882 ISDN Modem to Autobaud

8-9

Table 8-2 Microkey Error Codes and Their Meaning

 

 

 

 

 

 

 

 

Error Code

Possible Cause

Solution

 

 

 

 

 

1022

Cannot remove TURBOBUF from the

Try to remove these items

 

 

SYSTEM.INI file.

manually and/or contact 3Com

 

 

Technical Support.

 

 

 

 

 

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:

1Use terminal emulation software on the connected computer to set the software at a low baud rate, such as 1200 baud.

2Power 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.

3Send the command AT&W to the 3C882 ISDN modem to save this change.