Table 5: The S-Register Summary. The S-registers 42 and 43 are for testing and
debugging purposes only.
Register
Default
Description
S10
20
Automatic disconnect delay
S11
95
DTMF dialing speed
S12
50
Escape guard time
S14
8
General bit-mapped options status
S21
48
V.24 bit-mapped options status
S22
112
Results bit-mapped options status
S24
10
Timer to control sleep mode
S28
1
V.34 modulation enable/disable
S30
0
Inactivity timer
S32
16
Synthetic ring volume
S33
0
Synthetic ring frequency
S35
0
Data calling tone
S36
7
Negotiation fallback
S37
0
Dial line rate
S38
1
Enable/disable K56flex settings
S42
1
Auto rate
S43
b
1
Auto mode
S48
7
LAPM error control and feature negotiation
S89
10
Timer to control sleep mode
S90
10
Local phone status
S91
5
Line transmit level
S108
7
Network codec type
AT commands reference S-Registers
1
S-registers generally affect how the AT commands perform. Contents of the
registers can be displayed or modified when the modem is in command mode.
To display the value of an S-register:
TYPE: ATSn where n is the register number.
PRESS: Enter
1. Lucent Technologies, Host-Based Controller Modem AT Command Set, Version 1.1, June 15, 1998.
B-4
Intel
®
PRO/100 SP Mobile Combo Adapter: User’s Guide
