Appendix A. AT Commands and S-Registers

 

 

 

 

S31

DTE RTS

Controls operation of the RTS line.

 

 

0=1 ms delay

 

 

17=18 ms delay

S32

DTE DSR

Controls the operation of the Data Set Ready

 

 

signal on the DTE connectors.

 

 

0=Force DSR on always

 

 

1=DSR off OOS + Test

 

 

2=DSR off Link Down

S33

DTE CD

Controls the operation of the Carrier Detect

 

 

line on the DTE connectors.

 

 

0=Force CD on always

 

 

1=CD is active during a call (Normal Opera-

 

 

tion)

 

 

2=Off with LOCD

 

 

3=Off link down

S34

DTE DTR

Determines how the Express XRT responds

 

 

to changes in DTR. This is a bit-mapped reg-

 

 

ister.

 

 

0=Ignore DTR

 

 

1=Force AT command mode when DTR is

 

 

off

 

 

2=Dump incoming call when DTR is off

 

 

4=Hang up incoming call when DTR is off

 

 

8=Hang up outgoing call when DTR is off

 

 

16=Answer incoming call when DTR is on

 

 

28=Idle when off

 

 

32=Dial SN0 when DTR is on

 

 

64=Dial SN0 when DTR transitions from off

 

 

to on

S36

Inactivity Timer

0=Off

 

 

1-255=Number of idle minutes before dis-

 

 

connect

S37

Conference/Call

Flash hook button defaults to:

 

Waiting

0=Call waiting

 

 

1=Call conferencing

S40

BOND TXINIT

Specifies the number of seconds the origi-

 

 

nating endpoint attempts to detect the

 

 

Async BONDING negotiation pattern from

 

 

the answering endpoint before deciding the

 

 

Async BONDING call has failed.

 

 

0 to 255, 10 sec is default.

61202.153L3-1

Express XRT User Guide

65

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ADTRAN Express XRT manual Dte Rts, Dte Dsr, Dte Cd, Dte Dtr, Bond Txinit