NETGEAR XM128 ISDN Reference Manual page 120

Reference Guide for the Model XM128 ISDN Digital Modem
Table D-4. Extended S-registers ATSn=x (continued)
Command Bit
S20=
S21=
1-2
3
4
D-6
Decimal Hexadecimal
0 0
1 1
3 3
4 4
5 5
9 9
11 B
12 C
13 D
14 E
15 F
0 0
2 2
4 4
0 0
8 8
0 0
16 10
Function and
description
DTE speed (bps) auto-detected
from AT command
230400 bps
115200 bps
57600 bps
38400 bps
19200 bps
9600 bps
4800 bps
2400 bps
1200 bps
460800 bps
921600 bps
Bitmapped register
Speaker is always off.
Speaker is on until carrier is
detected.
Speaker is always on.
DSR is always on.
According to CCITT. See also
S-register S44.4 and S41.5.
CD is always on.
CD tracks presence of data carrier.
See also S-register 38.3.
Status Registers and Result Codes
Default or
reference
+003
M0
M1
M2
&S0
&S1
&C0
&C1