Multi-Tech Systems MTS2SA-T - Manual (Page 121)

Chapter 10
− Modem Mode AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. MultiConnect Serial-to-Serial Adapter User Guide (S000354A) 121
Register Unit Range Default Description
S22 117 (75h) Speaker/Results Bit-Mapped Options Status. Indicates the status
of command options.
Default:
117 (75h) (01110101b)
Bits 0-1 Speaker volume (Ln)
0 = Off (L0)
1 = Low (L1) (Default.)
2 = Medium (L2)
3 = High (L3)
Bits 2-3 Speaker control (Mn)
0 = Disabled (M0)
1 = Off on carrier (M1) (Default.)
2 = Always on (M2)
3 = On during handshake (M3)
Bits 4-6 Limit result codes (Xn)
0 = X0
4 = X1
5 = X2
6 = X3
7 = X4 (Default.)
Bit 7 Reserved
S23 0 General Bit-Mapped Options Status. Indicates the status of
command options.
Bits 0-6
Not used
Bits 6-7 Guard tone (&Gn)
0 = None (&G0) (Default.)
1 = None (&G1)
2 = 1800 Hz (&G2)
S24 seconds 0–255 0 Sleep Inactivity Timer. Sets the length of time, in seconds, that the
modem will operate in normal mode with no detected telephone line
or DTE line activity before entering low-power sleep mode. The timer
is reset upon any DTE line or telephone line activity. If the S24 value
is zero, neither DTE line nor telephone inactivity will cause the
modem to enter the sleep mode.
S25 0.01 s 0–255 5 Delay to DTR OFF. 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.
S26 0.01 s 0–255 1 RTS-to-CTS Delay. 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.