Paradyne 3821PLUS manual Initialization Strings, 25bis Applications

AT Commands and S-Registers

Initialization Strings

An initialization string contains several AT commands that are entered at once to program the modem for a specific application.

The following initialization strings identify essential AT commands that directly impact modem operation for a particular application. If you need to modify these strings for your application, make sure additional commands are inserted somewhere in the middle of the initialization string. Whenever an &L command is used, it must appear at the end of an initialization string.

V.25bis Applications

For V.25bis HDLC (High-level Data Link Control)

dial-line operation, create an initialization string with the following commands. Note that the character format can be 8 data bits, no parity, and 1 stop bit; 7 data bits, odd parity, and 1 stop bit; or 7 data bits, even parity, and

1 stop bit:

TYPE: AT&F &D1 &S1 &M234 &W

PRESS: Enter

For V.25bis bisync operation, create an initialization string with the following commands. Note that the character format must be 7 data bits, odd parity, and

1 stop bit:

TYPE: AT&F &D1 &S1 &M233 &W

PRESS: Enter

Synchronous Leased-Line Applications

For synchronous leased-line operation, create the following initialization string with the following commands:

TYPE: AT&F &D1 &S1 S44=n S45=n S82=n &M1 &W &Ln &W

Where: n is the value for the AT command. Refer to either Table 4-1or Table 4-2to determine the best possible values for these commands.

PRESS: Enter

AT&T Exclusive Dialing for DATAKIT Applications

For AT&T exclusive dialing for DATAKIT applications, create an initialization string with the following commands:

TYPE: AT&F &C5 &D1 &S3 &R0 \D3 \Q1 \G1 S85=1 &M235 &W

PRESS: Enter

3821-A2-GB20-40 January 1999 4-27