User Manual

Table Of Contents
Appendix A
Modem AT Commands
39
Xircom Inc. Mini PCI User’s Guide
S48 LAPM Error Control and Feature Negotiation
S48=7
Negotiation enabled.
S48=128
Negotiation disabled; forces immediate fallback options specified in S36.
The following table shows the S36 and S48 configuration settings needed to negotiate certain
types of connections.
S48=7
S48=128
S36=0,2
LAPM or hangup
<Do not use
S36=1,3
LAPM or buffered
Buffered
S36=4,6
LAPM, MNP, or hangup
MNP or hangup
S36=5,7
LAPM, MNP, or buffered
MNP or buffered
S89 Timer to Control Sleep Mode
This register displays the number of seconds of inactivity (no characters sent from DTE, no RING) in the
off-line command state before the modem places itself into standby mode. A value of zero prevents standby
mode. Default is 30. Range is 0 and 5 - 65.
S91 Line Transmit Level
This register specifies the line transmit level, in dB, with an implied minus sign. Default is 15 dB, range
is 6 - 15.
S92 Direct Connect Transmit Level
This register sets the transmit level, in dBm, for direct connect cellular. This value may have different
settings for different phones. Default is 0 dBm.
S95 Negotiation Message Options
This register enables various result codes indicating the sequence of events in an error-controlled
connection. This S-Register does not affect the way the connection is negotiated, it just enables extended
messages.
S95=0
Disables extended result code messages.
S95=1
Use DCE (modem-to-modem) speed when reporting CONNECT result
codes.
S95=2
Append "/ARQ" to CONNECT result code when an error-controlled (EC)
connection is established.
S95=4
Enable CARRIER result codes.
S95=8
Enable PROTOCOL result codes.
S95=32
Enable COMPRESSION result codes.