Changing the Parameter Settings 5-5question mark (?) after the particular value. For example, toread the status of S register 63, you would typeAT S63?and then press [Enter] or [Return].After completing its tasks, the 3C882 ISDN modem sends amessage to the screen followed by a result code. Refer toAppendix B for a complete list of result codes.5 To change another parameter setting, repeat steps 1through 4. Otherwise, go on to Chapter 7, “Placing andReceiving Calls.”Table 5-1 Changing Default SettingsParameter Default Value To Change the DefaultQuickSelect Enabled (S71=0) Send the command ATS71=1 to use Async-SyncPPP exclusively or ATS71=2 to use V.120 exclusively.DBA Enabled for bothincoming andoutgoing calls(S70=3)Send the command ATS70=0 to disable DBA.Auto Answer Disabled (S0=0) Send the command ATS0=(number of rings beforethe ISDN modem answers the call) to enable AutoAnswer.Compression Enabled (%C2) Send the command AT%C0 to disable compression.Autobaud Enabled ($B0) Send the command AT$B (rate) to set a specificbaud 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 youmust send the command AT $B230400 to the ISDNmodem.* To access the Configuration dialog box, the baud rate must be set to Autobaud.
