AIS AI2524 Manuel D’Utilisation
AI2524 Router Card User’s Manual
Page 14-4
August 1997
2524UM
Super Frame configured, the remote alarm condition is signalled out
of band in the facility data link.
of band in the facility data link.
You can see if the FT1/T1 CSU/DSU is receiving a remote alarm (yel-
low alarm) by issuing the
low alarm) by issuing the
show service-module
command.
To disable remote alarms, type this in interface configuration mode:
no service-module t1 remote-alarm-enable
Enable Loopcodes that Initiate Remote Loopbacks
To configure the remote loopback code used to transmit or accept CSU
loopback requests, and type this in interface configuration mode:
loopback requests, and type this in interface configuration mode:
service-module t1 remote-loopback full
To configure the loopback code used by the local CSU/DSU to gener-
ate or detect
ate or detect
payload-loopback
commands, type this in interface
configuration mode:
service-module t1 remote-loopback payload
[alternate | v54]
Note:
By entering the
service-module t1 remote-
loopback
command without specifying any keywords,
you enable the standard-loopup codes, which use a 1-in-5
pattern for loopup and a 1-in-3 pattern for loopdown.
pattern for loopup and a 1-in-3 pattern for loopdown.
You can simultaneously configure the
full
and
payload
loopback
points. However, only one loopback payload code can be configured
at a time. For example, if you configure the
at a time. For example, if you configure the
service-module t1
remote-loopback payload alternate
command, a pay-
load v.54 request, which is the industry standard and default, cannot b
transmitted or accepted. Full and payload loopbacks with standard-
loopup codes are enabled by default.
transmitted or accepted. Full and payload loopbacks with standard-
loopup codes are enabled by default.
The
no
form of this command disables loopback requests. For exam-
ple, the
no service-module t1 remote-loopback full
command ignores all full-bandwidth loopback transmissions and re-
quests. Configuring the no form of the command may not prevent telco
line providers from looping your router in esf mode, because fractional
T1/T1 telcos use facilities data-link messages to initiate loopbacks.
quests. Configuring the no form of the command may not prevent telco
line providers from looping your router in esf mode, because fractional
T1/T1 telcos use facilities data-link messages to initiate loopbacks.
If you enable the
service-module t1 remote-loopback
command, the
loopback remote
commands on the FT1/T1 CSU/
DSU module will not be successful.