Name
service-module t1 — interface
Synopsis
service-module t1parameters
no service-module t1parameters
Configures
Internal T1 CSU/DSU
Default
Depends on the command
Description
The service-module
commands are for routers that
have T1 CSU/DSU modules built into them. These commands set various
options on the internal CSU/DSU. The parameters that can be
configured are:
-
clock source
{internal | line}
By default, the clock source for a T1 CSU/DSU is the
line
, which is provided by the carrier. This command allows you to switch to theinternal
clock source on the module.-
data-coding
{inverted | normal}
By default, the data coding is set to
normal
. Setting the data coding toinverted
instructs the module to convert all 1s to 0s and all 0s to 1s. If the data coding is inverted on one end of the line, the other end must also be inverted or the connection will fail.-
framing
{esf | sf}
This command sets the framing type for the T1 module, which can be
esf
(Extended Superframe) orsf
(Superframe). The default framing type for a T1 module is ESF.-
lbo
{-15 db | -7.5 db | none}
This command sets the line build-out value. -
15 db
decreases the outgoing signal by 15 decibels; -7.5 db
decreases it by 7.5 decibels. Your provider will know what the build-out should be for your link. The default is no build-out (none
) on the outgoing signal.-
linecode
{ami | b8zs}
By default, the line encoding is set to
b8zs
. It can be changed toami
with this command. Your service carrier provides the T1 linecode ...
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