NETGEAR XM128 ISDN - Manual (Page 120)

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