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Configuring a Channelized T3 Link
local
network {line | payload}
remote line fdl {ansi | bellcore}
remote line inband
remote payload [fdl] [ansi]
Examples of the loopback commands follow:
Set the first T1 line into local loopback.
•
The example that follows is for a port adapter on a VIP in interface processor slot 1:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# controller T3 1/0/0
Router(config-controller)# t1 1 loopback local
The example that follows is for a port adapter in slot 1 of the Cisco 7200 series routers:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# controller T3 1/0
Router(config-controller)# t1 1 loopback local
In the preceding examples, local loopback loops the router output data back toward the router at the
T1 framer and sends an AIS out toward the network.
•
Set the first T1 line into network line loopback.
The example that follows is for a port adapter on a VIP in interface processor slot 1:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
PA-MC-2T3+ Multi-Channel T3 Port Adapter Installation and Configuration
5-14
Chapter 5
Configuring Channelized mode for the Cisco PA-MC-2T3+
Loops the router output data back toward the router at the T1
framer and sends an AIS signal out toward the network.
Loops the data back toward the network before the T1 framer
and automatically sets a local loopback at the HDLC
controllers (line), or loops the payload data back toward the
network at the T1 framer and automatically sets a local
loopback at the HDLC controllers (payload).
Sends a repeating, 16-bit ESF data link code word (00001110
11111111 for ANSI; 00010010 11111111 for Bellcore) to the
remote end, requesting that it enter into a network line
loopback.
Specify the ansi keyword to enable the remote line facility
data link (FDL) ANSI loopback on the T1 channel, per the
ANSI T1.403 specification.
Specify the bellcore keyword to enable the remote SmartJack
loopback on the T1 channel, per the TR-TSY-000312
specification.
Sends a repeating, 5-bit inband pattern (00001) to the remote
end, requesting that it enter into a network line loopback.
Sends a repeating, 16-bit ESF data link code word (00010100
11111111) to the remote end, requesting that it enter into a
network payload loopback. Enables the remote payload
Facility Data Link (FDL) ANSI loopback on the T1 channel.
You can optionally specify fdl and ansi, but it is not
necessary.
OL-3526-05
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