DLM4100 User’s Manual
P/N 161-09977-001B
12
S21 General Bit-Mapped Options:
S21 reflects the state of several “AT” commands.
Bit 0-2 Not used
Bit 3-4 0=DTR ignored (&D0)
1=Enter command mode on DTR off (&D1)
2=Disconnect on DTR off (&D2)
3=Reset on DTR off (&D3)
Bit 5
0=DCD always active (&C0)
1=DCD on with carrier (&C1)
Bit 6
0=DSR always active (&C0)
1=DSR on when modem ready (&C1)
Bit 7
0=No disconnect on space (ATY0)
1=Disconnect on space (ATY1)
S22 General Bit-Mapped Options:
S22 reflects the stat of several “AT” commands.
Bit 0-1 0=Low speaker volume (ATL0)
1=Low speaker volume (ATL1)
2=Moderate speaker volume (ATL2)
3=High speaker volume (ATL3)
Bit 2-3 0=Speaker off (ATM0)
1=Speaker off with carrier (ATM1)
2=Speaker always on (ATM2)
3=Speaker on during handshake (ATM3)
Bit 4-6 0=Basic result codes (ATX0)
4=Connect speed result codes (ATX1)
5=No blind dial (ATX2)
6=Busy detection (ATX3)
7=Full result codes (ATX4)
Bit 7
Not used
S23 General Bit-Mapped Options:
S23 reflects the state of several “AT” commands.
Bit 0
0=Remote DLB disabled (AT&T5)
1=Remote DLB allowed (AT&T4)
Bit 1-3 0=Host interface at 300 BPS
1=Host interface at 600 BPS
2=Host interface at 1200 BPS
3=Host interface at 2400 BPS
4=Host interface at 4800 BPS
5=Host interface at 9600 BPS
6=Host interface at 19200 BPS
7=Host I/F at 38,400 BPS or higher
Bit 4-5 0=Even parity in use
1=Not in use
2=Odd parity in use
3=No parity in use
Bit 6-7 0=No guard tone (AT&G0)
1=No guard tone (AT&G1)
2=1800 Hz guard tone (AT&G2)
3=Not
used
