Lucent Technologies Stinger MRT 19 Getting Started Manual page 124

Configuring the SHDSL line interfaces
Configuring SHDSL interfaces
Parameter
clock-priority
loop-back
margin
8-4
Setting
Clock priority assigned to the SHDSL line. Used to select a
particular SHDSL line as the 8kHz system clock source.
Specify one of the following values:
high-priority—A line with this priority is selected over
lines with lower priorities. If more than one line has the
highest priority, the first one to become available is the
source.
middle-priority—Second-highest clock priority.
low-priority—Last clock priority.
Whether the line passes normal data or is in loopback
mode. Specify one of the following values:
none (default)—The line is not being used for loopback
testing.
analog—The line is enabled for analog loopback testing.
(You might need to terminate the DSL line with a
150-ohm resistor).
digital—The line is enabled for digital loopback
testing.
Noise margin value (in decibels). Specifying a value that is
less than 6 decibels causes modems to train at higher rates,
but on noisy loops, also causes them to become unstable
and retrain. If this parameter is set to a value that is more
than 6 decibels, the modems train at lower rates, but are
more stable and are less likely to retrain on noisy loops.
Specify one of the following values:
0db
1db
2db (the default)
3db
4db
5db
6db
7db
8db
9db
10db
disable
Stinger® MRT Getting Started Guide