Chapter 3 - AT Commands, S-Registers and Result Codes
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Register Unit Range Default Description
S30
1 minute 0–255 0 S30 specifies the length of time (in
tens of seconds) that the modem
waits before disconnecting when no
data is sent or received. This func-
tion is only applicable to buffer mode.
S31
Bit-Mapped Options Status (Indicates the status of command Op-
tions.) Default: 194
Bit 0 Single Line Connect Message Enable/Disable (\Vn)
0 =Messages controlled by S95, Wn and Vn (\V0)--
Default
1 =Single Line Connect Message (\V1)
Bit 1 Auto Line Speed Detection (Nn)
0 = Disabled (N0)
0 = Enabled (N1)--Default
Bit 2-3 Error Correction Progress Messages (Wn)
0 = DTE speed only (W0)--Default
1 = Full Reporting (W1)
2 = DCE speed only (W2)
Bit 4-5 Caller ID (#CID)
0 = Caller ID Disabled (#CID = 0)--Default
1 = Short Formatted Caller ID Enabled
(#CID = 1)
2 = Long unformatted Caller ID Enabled
(#CID = 2)
Bit 6-7 Reserved
S32
decimal 0–255 17 Sets the value of the XON character.
S33
decimal 0–255 19 Sets the value of the XOFF character.