Status Registers
10-10
V.3600
Bit Mapped — S21
Bit Mapped — S22
Bit
Value
Command
Description
6,
0
00
10
01
11
&S
&S1
&S2
&S3
DSR forced on
DSR on when online
DSR off 5 seconds after disconnect
DSR follows off hook (OH)
5,
1
00
10
01
11
&C
&C1
&C2
&C3
DCD always on
DCD on while carrier present
DCD on except for 5 seconds after disconnect
DCD follows RTS on remote modem; not valid
in reliable mode
2
0
1
&R
&R1
CTS follows RTS by S26 delay
CTS always on
4,
3
00
01
10
11
&D
&D1
&D2
&D3
Modem ignores DTR
Modem assumes command mode when DTR
turns off
Modem hangs up when DTR turns off
Modem resets when DTR turns off
7
0
1
Y
Y1
Long space disconnect disabled
Long space disconnect enabled
Bit
Value
Command
Description
1,
0
00
01
10
11
L
L1
L2
L3
Speaker volume low
Speaker volume low
Speaker volume low
Speaker volume high
3,
2
00
01
10
11
M
M1
M2
M3
Speaker off
Speaker on until carrier detect
Speaker always on
Speaker off when modem is dialing
6-4
000
001
010
011
100
X
X1
X2
X3
X4
CONNECT
message only, blind dials, no busy
detect
CONNECT / appropriate code for rate, blind
dials, no busy detect
CONNECT / appropriate code for rate, waits
for dial tone, no busy detect
CONNECT / appropriate code for rate, blind
dials, reports BUSY
CONNECT / appropriate code for rate,
waits for dial tone, reports BUSY