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Description Example Comments
Call Termination Cause 0 0 -Call Terminated by Local
modem 1 -Call Terminated
by Remote modem 2 -No
Answer - the Remote mo-
dem did not answer 3 -Train-
ing Failure - the modems
failed to negotiate V.34 or
56K protocols. 4 -Protocol
Failure - the modems failed
to negotiate V.42 protocol.
Robbed-Bit Signaling (56K only) 6 The number of robbed bits
detected.
Digital Loss 0 Digital Loss in dB.
Remote Server ID XXX ID number of remote server.
S-Registers Reference
S-registers generally affect how the AT commands perform. Contents of the registers
can be displayed or modified when the modem is in command mode.
To display the value of an S-register, type
ATSn?
where n is the register number. Press ENTER.
To modify the value of an S-register, type
ATSn = r
where n is the register number, and r is the new register value. Press ENTER.
S0 Auto Answer Ring Number
Range: 0−255
Default: 0
Units: rings
This register determines the number of rings the modem will count before automati-
cally answering a call. Enter 0 (zero) if you do not want the modem to automatically
answer at all. When disabled, the modem can only answer with an ATA command.