Chapter 3 - AT Commands, S-Registers and Result Codes
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Register Unit Range Default Description
S37 (cont'd)
0 = Attempt automode connection. If N0 is active, connection is attempted at
the most recently sensed DTE speed (+MS command settings are updated to
the most appropriate values). If N1 is active, connection is attempted at the
highest possible speed (+MS settings are updated to 11,1,300,2880 to reflect
V.34, automode, 300 bps minimum speed, and 28800 bps maximum speed)-
-Default.
S38
decimal 0–255 20 This register specifies the delay
between the modem’s receipt of the
H command to disconnect (or ON-
to-OFF transition of DTR if the mo-
dem is programmed to follow the
signal), and the disconnect opera-
tion. Applicable to error-correction
connection only. If S38 is set to a
value between 0 and 254, the waits
for the remote modem to acknowl-
edge all data in the modem buffer
before disconnecting. If S38 is set
to 255, the modem does not time-
out and continues to attempt to de-
liver data in the buffer until the con-
nection is lost or the data is deliv-
ered.
S39
Flow Control Bit-Mapped Options Status (Indicates the status of
command Options.) Default: 3
Bit 0-2 Status of Command Options
0 = No Flow Control
3 = RTS/CTS (&K3)--Default
4 = XON/OFF (&K4)
5 = Transparent XON (&K5)
6 = Both Methods (&K6)
Bit 3-7 Reserved
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