Configuring Modems For Restoral - Motorola 3460 Fast’R User Manual

Configuring Modems for Restoral

You can configure the modem to automatically respond to deteriorating
leased-line conditions by switching operation to a back-up dial line.
For further details on the parameter options listed here, refer to the 3460
Fast'R Reference Guide (part no. T0022).
If you normally operate the modem on a leased line, you can set the
following options to enable it to switch operation to a backup dial line
when conditions warrant. The following example shows the default
options.
Parameter
Answer Restoral
Lease to Dial
Threshold
Hold Dial Line
Parameters and options shown shaded gray vary by country. For details, refer
to Appendix B of the 3460 Fast'R Reference Guide.
3-22
3460 Fast'R
Option
*
AT AS0=LL Fail
Answering modem:
*
AT DI1=Low/Fast
*
AT HD0=Off
Comment
When connected to the leased
line, the modem answers a dial
call only if the leased line fails.
This parameter does not apply
when AT*RE=0 (Off).
The originating modem uses this
option to determine the threshold
for initiating restoral. Low/Fast is
the most sensitive option–if three
retrains occur within five
minutes, the modem initiates
restoral.
The originating modem uses the
HD option to determine how to
hold a dial connection while
testing a leased line. Off means
that the modem disconnects from
the dial line as soon as it connects
to the leased line.
This parameter works only when
the Initiate/Terminate Restoral
parameter (*RE) is set to
NM/Fast'RVu/Auto (option 4).