Comtrol AT Command Set Rev A - Manual (Page 134)

AT Commands Reference Manual
Conexant 100722B
3-108
S38 - Delay Before Forced Hang Up
S38 specifies the delay between the modem's receipt of the H command to disconnect (or
ON-to-OFF transition of DTR if the modem is programmed to follow the signal), and the
disconnect operation. Applicable to error-correction connection only. This parameter can
be used to ensure that data in the modem buffer is sent before the modem disconnects.
1. If S38 is set to a value between 0 and 254, the modem will wait that number of
seconds for the remote modem to acknowledge all data in the modem buffer before
disconnecting. If time expires before all data is sent, the NO CARRIER result code
will be issued to indicate that data has been lost. If all data is transmitted prior to
time-out, the response to the H0 command will be OK.
2. If S38 is set to 255, the modem does not time-out and continues to attempt to deliver
data in the buffer until the connection is lost or the data is delivered.
Range: 0-255 seconds
Default: 20
S39 - Flow Control Bit Mapped Options Status
Default: 3 (00000011b)
Bits 0-2 Status of command options
0 = No flow control
3 = RTS/CTS (&K3) (Default.)
4 = XON/XOFF (&K4)
5 = Transparent XON (&K5)
6 = Both methods (&K6)
Bits 3-7 Reserved
S40 - General Bit Mapped Options Status
S40 indicates the status of command options.
Default: 104 (68h) (01101000b)
Bits 0-1 MNP Extended Services (-Kn)
0 = Disable extended services (-K0) (Default.)
1 = Enable extended services (-K1)
2 = Enable extended services (-K2)
Bit 2 Reserved
Bits 3-5 Break Handling (\Kn)
0 = \K0
1 = \K1
2 = \K2
3 = \K3
4 = \K4
5 = \K5 (Default.)
Bits 6-7 Reserved