Changing The Parameter Settings

5-5

3Type:

AT <command>

4Press Enter or Return.

Refer to Table 5-1 for the appropriate command. For example, to disable compression, type AT%C0, and then press [Enter] or [Return].

An AT command line starts with the characters AT. The command line accepts up to 40 command characters in the line (not including the two AT characters, or spaces).

After completing its tasks, the 3C882 ISDN modem sends a message to the screen followed by a result code. Refer to Appendix B for a complete list of result codes.

5To change another parameter setting, repeat steps 1 through 4. Otherwise, go on to Chapter 6, “Placing and Receiving Calls.”

Table 5-1 Changing Default Settings

Parameter

Default Value

To Change the Default

 

 

 

QuickSelect

Enabled

Send the command ATS71=1 to use Async-Sync

 

 

PPP exclusively or ATS71=2 to use V.120 exclusively.

DBA

Enabled

Send the command ATS70=0 to disable DBA.

Auto Answer

Disabled

Send the command ATS0=(number of rings before

 

 

the ISDN modem answers the call) to enable Auto

 

 

Answer.

Compression

Enabled

Send the command AT%C0 to disable compression.

Autobaud

Enabled

Send the command AT$B (rate) to set a specific

 

 

baud rate. Acceptable values are 1200, 2400, 4800,

 

 

9600, 19200, 38400, 57600, 115200, and 230400.*

 

 

Send the command AT$B0 to return to Autobaud.

 

 

Autobaud does not exceed 115200. For 230400 you

 

 

must send AT $B230400 to the ISDN modem.

 

 

 

* To access the Configuration dialog box, the baud rate must be set to Autobaud.

Page 65
Image 65
3Com 3C882 manual Type, Auto Answer Disabled, Autobaud Enabled