Specifications

AT Commands and Result Codes
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62
Error correction commands
Caller ID commands
Command Function Default
AT %C<n> Enables or disables data compression.
n=0: Disables data compression.
n=1: Enables MNP5 data compression.
n=2: Enables V.42 bis data compression.
n=3: Enables V.42 bis and MNP5 data compression depending on the type of error
correction.
n=3
AT \A<n> Sets maximum block size.
n=0: 64 characters.
n=1: 128 characters.
n=2: 192 characters.
n=3: 256 characters.
n=1
AT \B<n> Sends break of duration <n> x 100 ms. —
AT *H<n> Selects MNP 10 link negotiation.
n=0: Link negotiation occurs at the highest supported speed.
n=1: Link negotiation occurs at 1200 bps.
n=2: Link negotiation occurs at 4800 bps.
n=0
AT -K<n> Enables or disables MNP 10 extended services.
n=0: Disables V.42 LAPM to MNP 10 conversion.
n=1: Enables V.42 LAPM to MNP 10 conversion.
n=2: Enables V.42 LAPM to MNP 10 conversion; inhibits MNP Extended Services
initiation during V.42 LAPM answer mode detection phase.
n=0
AT -Q<n> Falls back to V.22 bis/V.22.
n=0: Disables fallback from a V.34, V.32 bis, or V.32 MNP reliable connection to an
MNP reliable 2400 or 1200 bps connection.
n=1: Enables fallback from a V.34, V.32 bis, or V.32 MNP reliable connection to an
MNP reliable 2400 or 1200 bps connection.
n=1
AT -SEC=<n> Enables or disables MNP10-EC. n=0
AT @M<n> Selects initial transmit level. n=0
AT :E<n> Enables or disables the compromise equalizer. n=1
Command Function Default
AT #CID=<n> Enables or disables Caller ID and format.
n=0: Disables caller ID.
n=1: Enables caller ID with formatted presentation to the DTE.
n=2: Enables caller ID with unformatted presentation to the DTE.
n=0