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APPENDIX A. AT COMMANDS
ACTIVE Professional External Modem User’s Manual
21
002 = Received level of -2dBm
. .
. .
43 Received level of -43dBm
AT%On * Selects answer/originate mode Default : 1
%O0 Selects answer mode
%O1 Selects originate mdoe
AT%Rn * Selects receive sensitivity (336RL ,336RL4 models) Default : 0
%R0 -43dBm
%R1 -33dBm
(For 336RD cards, use on board jumper JP2 to select receive sensitivity
JP2 1-2 shorted : -33dBm
2-3 shorted : -43dBm )
AT%Q Report line signal quality
Returns the high-order byte of the calculated Eye Quality
Monitor(EQM) value. The high-order byte can range from 0 to 127.
However, when the value is 70DC ±10 (depending on the line speed) or
greater, the modem will automatically retrain if enabled by the AT%E1
command. The value for a normal connection ranges from about 0 to 15
and approaches 60 for a progressively poorer connection.
AT#CIDn Caller ID Default : 0
AT#CID=0 Disables Caller ID
AT#CID=1 Enables Caller ID with formatted presentation to the DTE
AT#CID=2 Enables Caller ID with unformatted presentation to the
DTE
AT#CID? Retrieves the current Caller ID mode from the modem
AT#CID=? Returns the mode capabilities of the modem in a list
with each element separated by commas
AT-SDR=n Enable/Disable Distinctive Ring Default : 0
AT-SDR=0 Disable Distinctive Ring. Any valid ring detected is
reported as RING
AT-SDR=1 Enable Distinctive Ring Type 1.
AT-SDR=2 Enable Distinctive Ring Type 2.
AT-SDR=3 Enable Distinctive Ring Type 1 and 2.
AT-SDR=4 Enable Distinctive Ring Type 3.
AT-SDR=5 Enable Distinctive Ring Type 1 and 3.
AT-SDR=6 Enable Distinctive Ring Type 2 and 3.
AT-SDR=7 Enable Distinctive Ring Type 1,2,3.