Version 7.2 527 Mediant MSBR
Reference Guide 73. WAN Access Commands
Syntax
loopback <traffic source> <loopback location>
loopback <traffic source> <loopback location> <timeout>
Command Description
<traffic source> Defines the traffic source to be looped back:
 ‘remote’ – loopback ingress traffic.
 ‘local’ – loopback egress traffic.
<loopback location>
Defines where the loop is performed in the T1 WAN
Interface:
ï‚§
‘line’ – loop is done in the csu.
<timeout>
On the local loopback only.
Specifies the timeout (in seconds) after the local loopback
releases. Default timeout is 180 seconds.
Default
By default, there is no loopback.
Command Mode
Privileged User
Example
This example set the remote line loopback on T1 Port 0/0.
(conf-if-t1 0/0)# loopback remote line
73.4.14.8 ber-test
This command specifies the Bit Error Rate test on the current T1 WAN interface.
Syntax
The syntax for this command includes several variations:
ber-test <channels group> <error rate> <pattern type>
ber-test <channels group> <error rate> <pattern type> <timeout>
ber-test <channels group> <error rate> <pattern type> forever
Command Description
<channels group>
ï‚§ Specifies the slot number within the range 1-24, on
which the BER test runs. (See channel-group
<error rate> Specifies the rate of injected errors to the BER interface:
 0 – no errors injected.