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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