7705 SAR Interfaces
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Interface Configuration Guide
3HE 11011 AAAC TQZZA Edition: 01
3.11.2.11 Configuring T1 Line Buildout
Telcordia GR-499 requirements indicate that a T1/E1 transmitter will typically
support an LBO adjustment in order to maintain an equivalent interconnect distance
of approximately 655 ft over the full range of cable lengths up to 655 ft (200 m).
Use the following CLI syntax to configure LBO functions for T1 (DS1) ports. The LBO
function is implemented using the length command. To change the length of the port,
you must first shut down the port and then configure the length. This command
applies to T1 ports only.
CLI Syntax: port port-id
tdm
length {133 | 266 | 399 | 533 | 655}
The following CLI syntax shows an example of configuring a length of 266 ft on a T1
port.
Example: config# port 1/1/1
config>port# shutdown
config>port# tdm
config>port>tdm# length 266
config>port>tdm# exit
config>port# no shutdown
Use the config port info command to display port configuration information.
ALU-A>config>port# info
#--------------------------------------------------
tdm
length 266
ds1
channel-group 1
encap-type cem
timeslots 1-24
no shutdown
exit
no shutdown
exit
exit
#--------------------------------------------------
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