Northern UTA220/UTA220k Escaping to PAD Command Mode, Escaping to AT Command Mode, Atdd, At&W

D-Channel X.25

Escaping to PAD Command Mode

When in data transfer mode or connect-in-progress mode, it is possible to escape to the PAD command mode to execute a PAD command. To escape to the PAD command mode issue the PAD recall character as specified by X.3 parameter 1. The default PAD recall character for the TA is DLE (Ctrl P).

Once in the PAD command mode, the PAD prompt character

*displays and only one PAD command may be executed. Upon execution of the PAD command, the PAD returns either to the previous mode of the PAD (i.e., data transfer) or to the final mode required by the execution of the PAD command (i.e., after execution of the PAD clear command, the final mode is the PAD command mode).

Escaping to AT Command Mode

To escape to the AT command mode from PAD data or command mode, enter the AT escape command (+ + +). This temporarily suspends PAD operations and follows standard is AT command function operation. To return to PAD operation enter:

ATDD

To end the call and exit the PAD enter:

ATH

To save the port and current session configuration, including the current PAD parameter configuration, to nonvolatile memory enter:

AT&W

Disconnecting the X.25 Virtual Connection

The X.25 virtual call connection is disconnected by issuing the

PAD Clear command while in the PAD command mode.

Example: *CLR

This disconnects the virtual call but leaves the terminal adapter on-line and in the PAD command mode.

When the virtual call is disconnected, the PAD Clear

Confirmed response and PAD prompt character are displayed:

CLR CONF

*

The PAD is now in the PAD command mode where another X.25 virtual connection can be established via the PAD Select command.

12-4 UTA220/UTA220k