S Registers - US Robotics USR3520 User Manual

Modemulator & 3g m2m cellular gateway
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S Registers

Use ATSx=y to set S register x to value y.
Use ATSx? to display the current value of S register x.
S$ * Display S Register Command Help Screen:
ATS$
S-Register Command Help (unrecognized commands accepted & ignored)
S0
Autoanswer Ring
S2
Escape Char (ASCII)
S7
NO ANSWER Timeout (sec)
S8
Comma Dial Delay (sec)
S19
Inactivity Timeout (mins)
S21
Break Time (10 ms)
S22
Xon
Char (ASCII)
S23
Xoff Char (ASCII)
S44
Leased Line Retry (sec)
OK
This command will not be forwarded to the analog modem.
S0 * Autoanswer Count (default=0)
S0=0 disables autoanswer (cellular and analog).
S0=1 causes the Modemulator to autoanswer and attempt a connection (cellular or analog) on the
first RING.
S0 may range from 0 to 255, however the calling Modemulator would likely abort the connection
attempt if S0 is set too high, because typically the NO ANSWER timeout is set to 60 seconds.
Modemulator User Guide
S59.1 (
2) Enable CID
S59.2 (
4) Disable Cmd Fwd to Analog Port
S59.3 (
8) Single-Ended Modemulation
S59.4 ( 16) Sched Remote Cmd Mode Next Dial
S59.5 ( 32) Originate Only
S59.6 ( 64) Concatenate Banners
S59.7 (128) Enable Dialback Security
S60
S61
S64
S65
Page 60 of 113
TX Heartbeat Period (sec)
Maximum Latency (sec)
Login Timeout (sec)
Analog Answer Timeout (sec)

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