Telenetics 56 User Manual
Page 125

AT Commands
Page 117
S16 - Test Mode Bit Mapped Options Status
S16 indicates the test in progress status.
Default:
0
Bit 0 Local analog loopback
0 =
Disabled (Default.)
1 =
Enabled (&T1)
Bits 1-7
Not used
S19 – Reserved
S19 is supported for backwards compatibility only. No value can be written. Responds
with default value.
Range:
None
Default :
0
S20 – Reserved
S20 is supported for backwards compatibility only. No value can be written. Responds
with default value.
Range:
None
Default:
0
S21 - V.24/General Bit Mapped Options Status
S21 indicates the status of command options.
Default:
52 (34h) (00110100b)
Bits 0-1 Reserved (0)
Bit 2
CTS behavior (&Rn)
0 =
CTS tracks RTS (&R0)
1 =
CTS always on (&R1) (Default.)
Bits 3-4
DTR behavior (&Dn)
0 =
&D0 selected
1 =
&D1 selected
2 =
&D2 selected (Default.)
3 =
&D3 selected
Bit 5 RLSD (DCD) behavior (&Cn)
0 =
&C0 selected
1 =
&C1 selected (Default.)
Bit 6
DSR behavior (&Sn)
0 =
&S0 selected (Default.)
1 =
&S1 selected
Bit 7 Long space disconnect (Yn)
0 =
Y0 (Default.)
1 =
Y1