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61200.153L1-13 Express XR/XRT Quick Start Guide 59
Appendix A. AT Commands and S-Registers
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
Operation)
2 = Off with LOCD
3 = Off link down
S34... DTE DTR ............ Determines how the Express XR/XRT responds
to changes in DTR. This is a bit-mapped regis-
ter.
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
S40... BOND TXINIT .. Specifies the number of seconds the originating
endpoint attempts to detect the Async BOND-
ING negotiation pattern from the answering
endpoint before deciding the Async BONDING
call has failed.
0 to 255, 10 sec is default.
S41... BOND TXFA ...... Specifies the number of seconds both endpoints
attempt to detect the async BONDING frame
pattern when a call is connected before deciding
the async BONDING call has failed. When
operating with other manufacturer's async
BONDING equipment it may be necessary to
lengthen this timer so that it matches TXADD01.
0 to 255, 10 sec is default.