Comtrol AT Command Set Rev A - Manual (Page 131)

AT Commands Reference Manual
100722B Conexant 3-105
S25 - Delay To DTR Off
S25 sets the length of time that the modem will ignore DTR for taking the action
specified by &Dn. Its units are seconds for synchronous modes and one hundredths of a
second for other modes.
Range: 0-255 (1 second for synchronous modes 1; 0.01 second otherwise)
Default: 5
S26 - RTS to CTS Delay
S26 sets the time delay, in hundredths of a second, before the modem turns CTS ON
after detecting an OFF-to-ON transition on RTS when &R0 is commanded. Pertains to
synchronous operation only.
Range: 0-255 hundredths of a second
Default: 1
S27 - Bit Mapped Options Status
S27 indicates the status of command options.
Default: 73 (49h) (01001001b)
Bits 0,1,3 Synchronous/asynchronous selection (&Mn/&Qn)
3 1 0
0 0 0 = &M0 or &Q0
0 0 1 = &M1 or &Q1
0 1 0 = &M2 or &Q2
0 1 1 = &M3 or &Q3
1 0 0 = Reserved
1 0 1 = &Q5 (Default.)
1 1 0 = &Q6
Bit 2 Leased line control (&Ln)
0 = Dial up line (&L0) (Default.)
Bits 4 - 5 Internal clock select (&Xn)
0 = Internal clock (&X0) (Default.)
1 = External clock (&X1)
2 = Slave clock (&X2)
Bit 6 CCITT/Bell mode select (Bn)
0 = CCITT mode (B0)
1 = Bell mode (B1) (Default.)
Bit 7 - Reserved