User guide

DLM4100 User’s Manual
P/N 161-09977-001B
15
S41 General Bit-Mapped Options: S41 stores the condition of various “AT” commands.
Bit 0-1 0=No data compression (AT%C0)
1=MNP5 data compression (AT&C1)
2=V.42bis data compression (AT&C2)
3=Either MNP5 or V.42bis data compression (AT&C3)
Bit 2 6
0 0=No fall back/forward (AT%E0)
1 0=Retrain enabled (AT%E1)
0 1=Fall back/forward enabled (AT%E2)
Bit 3-5,7 Not used
S46 Data Compression Control: S46 selects whether or not he modem will support data compression with
error control.
S46=136 No data compression
S46= 138 Data compression selected
Default: 138
S48 V.42 Negotiations: S48 determines the modem’s V.42 negotiation process.
S48=0 Proceed with LAPM
S48=7 Negotiate per V.42
S48=128 Assume LAPM failure
Default: 7
S86 Fall Failure Code: S86 shows why the last “NO CARRIER” response was issued.
S86=0 Normal disconnect
S86=4 Loss of carrier
S86=5 V.42 negotiation failure
S86=9 Modem handshake failure
S86=12 disconnect initiated by remote modem
S86=13 No response after 10 retries
S86=14 Protocol violation
S95 Extended Result Codes: S95 permits the user to customize the extended result codes.
Bit 0 Connect result code shows link speed
Bit 1 Add /ARQ to connect response
Bit 2 Add /VFC to carrier response
Bit 3 Enable protocol response
Bit 4 Not used
Bit 5 Enable compression result code
Bit 6 Not used
Bit 7 Not used