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2. ECC Command Set
COMMAND DESCRIPTION
AT%Cn Enable/Disable Data Compression
Enables or disables data compression negotiation. The modem can only
perform data decompression on an error corrected link. The parameter
value, if valid, is written to S41 bits 0 and 1.
AT%C0 Disables data decompression. Resets S46 bit 1.
AT%C1 Enables MNP 5 data compression negotiation. Resets S46 bit 1.
AT%C2 Enables V.42 bis data compression. Sets S46 bit 1.
AT%C3 Enables both V.42 bis and MNp 5 data compression. Sets S46
bit1.(Default)
AT\An Select Maximum MNP Block Size
The modem will operate an MNP error corrected link using a maximum
block size controlled by the parameter supplied. The parameter value,
if valid, is written to S40 bits 6 and 7.
AT\A0 64 characters.
AT\A1 128 characters.(Default.)
AT\A2 192 characters.
AT\A3 256 characters.
AT\Bn Transmit Break to Remote
In non-error correction mode, the modem will transmit a break signal
to the remote modem with a length in multiples of 100ms according to
to parameter specified. If a number in excess of 9 is entered, 9 is
used. The command works in conjunction with the \K command. In error
correction mode, the modem will signal a break through the active
error correction protocol, giving no indication of the length.
AT\B1-\B9 Break length in 100 ms units.(Default=3, Non-error
correction mode only.)
2.1 MNP 10 Command Set
COMMAND DESCRIPTION
AT)Mn Automatic Level Adjustment Controls
AT)M0 MNP 10 link negotiation power adjustment disabled (Default)
AT)M1 MNP 10 link negotiation power adjustment enabled
AT*Hn Link Negotiation Speed
This command controls the connection speed for link negotiations
before upshift occurs between two MNP 10 modems. The parameter value,
if valid, is written to S28 bits 6 and 7.
AT*H0 Link negotiation occurs at the highest supported speed.
(Default)
AT*H1 Link negotiation occurs at 1200 bps; used primarily for
establishing cellular connections.
AT*H2 Link negotiation occurs at 4800 bps; used primarily to
negotiate an MNP 10 connection on less than average quality
telephone lines.
AT-Kn MNP Extend Services
Enables or disables conversion of a V.42 LAPM connection to an MNP 10
connection. The parameter value, if valid, is written to S40 bits 0 and 1.