Appendix A. AT Commands and S-Registers

S-REGISTER LIST

S0 AUTO ANSWER

S2 ESCAPE CHAR-

ACTER

S3 END OF LINE CHARACTER

S4 LINE FEED CHARACTER

S5 BACK SPACE CHARACTER

S7 CONNECT TIME

S8 Call Rejection

Determines how the Express XRT answers an incoming call.

0 = Disable (Express XRT does not answer call).

1 = Enable (Express XRT answers all calls).

2 = Dump all calls.

Determines which key or character (in ASCII code) defines the escape command. The standard escape character is a plus (+) sign (ASCII value of 43 decimal). To change the character set, set S2 to the desired ASCII value.

Range = 0 to 127

Determines which key or character (in ASCII code) ends a command line. The stan- dard end-of-line character is the carriage re- turn (ASCII value of 13 decimal).

Range = 0 to 127

Determines which key or character (in ASCII code) advances the cursor to the next line after ending a command line or after an Express XRT message. The standard charac- ter is the line feed (ASCII value of 10 deci- mal).

Range = 0 to 127

Determines which key moves the cursor back one space to erase a character. The standard character is the backspace (ASCII value of 8 decimal).

Range = 0 to 127

Determines how long the Express XRT waits for an outgoing call to be answered.

15 = 15 seconds

30 = 30 seconds

60 = 1 minute

120 = 2 minutes

240 = 4 minutes

Determines which incoming voice calls the Express XRT will reject.

0=Disables

1=Reject anonymous calls only 2=Reject calls on call rejection list only 3=reject anonymous and call rejection list numbers

61202.153L3-1

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ADTRAN Express XRT manual Register List, S8 Call Rejection