Internal 9600/14.4K Composite Link Modem Commands - Multitech MMH900 User Manual

5.2.5 Internal 9600/14.4K Composite Link
Modem Commands
Command Description
$MC Modem ConfigurationSelect
This command configures the operations speed
at which the internal composite link modem will
operate. The possible configurations are as
follows.
9600 bps Modem
$MC0: V.29/9600 bps
$MC1: V.29/7200 bps
$MC2: V.29/4800 bps
$EP0-2 Echo Protect Tone
The Echo Protect Tone command sets the
presence and length of the echo protect tones
generated by the modem. With an echo protect
tone present, the modem will send a tone on the
line prior to connection. The $EP0 command
shuts off echo protection on the line. This
parameter should be changed only under the
direction of Multi-Tech's Technical Support
personnel. The echoprotect tone commands are
as follows:
$LA0-2 Link Amplitude
This command enables cable equalization that
compensates for amplitude distortion in the
public telephone network that is caused by
elements other than the cable to and from the
central office. The $LA1 command
compensates for the typical distortion found in a
survey done of long distance lines in Japan and
the $LA2 command compensates for conditions
based on a survey done in the U.S.
14.4 Kbps Modem
$MC0: V.29/9600 bps
$MC1: V.29/7200 bps
$MC2: V.29/4800 bps
$MC3: V.33/14400 bps
$MC4: V.33/12000 bps
$EP0: off (default)
$EP1: short at 30 ms
$EP2: long at 185 ms
Chapter 5 - Commands
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