Lucent Technologies SLC ConnectReach User & Service Manual page 360

SLC ConnectReach System Monitoring
Using the Statistics Command to Display System
Elements Status
Displaying Statistics for a T1 Interface
(Continued)
Setting loopback on
a T1 line
7-26
Issue 4 June 2002
The setloopback command is used to place the T1 circuit into the loopback
mode. The following types of loopback are possible:
A payload loopback unframes then reframes prior to echoing bits.
3
A line loopback simply echoes bits.
3
At the statistics:T1 prompt, enter the setloopback command and the
appropriate T1 line parameters from the following table.
The device which is both the source and destination of the T1 stream needs to be
internally clocked. The other T1 device should be network clocked.
Enter this command at
the Statistics:T1
prompt ...
setloopback
For example:
(statistics:T1)> setloopback network line 10
NOTE:
The alarm indication signal (AIS) is a blue alarm, not a loopback.
The time-out limit (which is expressed in minutes) ensures that the T1 line reverts
to normal operation automatically after the specified time elapses, preventing
unnecessary downtime.
The SLC ConnectReach system responds to remote channel service unit (CSU)
and data service unit (DSU) loopback requests in accordance with AT&T
Publication 43801. The SLC ConnectReach system does not respond to remote
fractional loopback requests in the V.54 or T1.403 (annex B) specifications.
...and specify this
T1 line ...and this
parameter... parameter
network, payload, line,
fractional AIS
363-208-050
...and this
timeout value
[5]...20
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