User's Manual

Line Speed= Asymmetric rates are displayed as /rate:TX/rate:RX, e.g., /1200 TX/75 RX.
Symmetric rates are displayed as a single DCE rate, e.g., 14400.
Voice and Data= Blank for Data mode only.
"SVD" for AudioSpan analog simultaneous audio/voice and data.
"DSVD" for G.729A or DigiTalk digital simultaneous voice and data.
2.2.c Commands Preceded by %
%C Enable/Disable Data Compression
Enables or disable data compression negotiation. The modem can only perform data compression on an
error-corrected link. The parameter value, if valid, is written to S41 bits 0 and 1.
%C0 Disables data compression. Resets S46 bit 1.
%C1 Enables MNP 5 data compression negotiation. Resets S46 bit 1.
%C2 Enables V.42 bis data compression. Sets S46 bit 1.
%C3 Enables both V.42 bis and MNP 5 data compression. Sets S46 bit 1. (Default)
Result Codes:
OK n=0,1,2,or 3.
ERROR Otherwise.
%En Enable/Disable Line Quality Monitor and Auto-Retrain or Fallback/Fall Forward
Control whether or not the modem will automatically monitor the line quality and request a retrain (%E1)
or fall back when quality is insufficient or fall forward when line quality is sufficient (%E2). Applies to
dial-up line only. The parameter value valid is written to S41 bits 2 and 6. If enable, the modem attempts to
retrain for a maximum of 30 seconds.
%E0 Disable line quality monitor and auto-retrain.
%E1 Enable line quality monitor and auto-retrain.
%E2 Enable line quality monitor and fallback/fall forward. (Default)
%E3 Enable line quality monitor and auto-retrain, but hang-up immediately when EQM reaches
hang-up threshold. (fast hang-up)
%L Report Received Signal Level
Returns a value identifying the received signal level. The possible values are:
009 -9 dBm.
010 -10 dBm.
011 -11 dBm.
043 -43 dBm.
%Q Line Signal Quality