Cisco 10000 Series Configuration Manual page 215

Chapter 7 4-Port Channelized OC-3/STM-1 Line Card Configuration
In the following example, FDL is enabled:
Router(config)# controller t3 1/0/0.1
Router(config-controller)# t1 2 fdl ansi
Configuring a T1 BER Test
You can configure an individual T1 interface to run an independent BER test. The test is used to check
cables and solve signal problems in the field. To send a BER test pattern on a T1 interface, use the
following command:
t1 t1-number bert pattern pattern interval time
[ ]
no
Where:
•
•
•
•
Note For each T3, you can run only one BER test at a time.
You can terminate a BER test at any time using the no form of the command.
For more information, refer to the online
Example:
•
Configuring Loopback Mode
If a problem occurs when you configure a T1 interface, you can troubleshoot the line card by using the
following command from controller configuration mode:
t1 t1-number loopback
bellcore
[no] t1 t1-number loopback
bellcore
Where:
•
•
OL-8834-04
t1 t1-number bert
t1-number is T1 interface number 1 to 28
time is 1 to 14,400 minutes
pattern is
– 2^11—pseudorandom test pattern (2048 bits in length)
– 2^15—pseudorandom O.151 test pattern (32,768 bits in length)
– 2^20-O153—pseudorandom O.153 test pattern (1,048,575 bits in length)
unframed causes the BER test pattern to use the entire T1 bandwidth, including the T1 framing and
payload bits. If unframed is omitted, the T1 is either SF or ESF framed as configured by the T1 n
framing command, and the BER test pattern occupies only the T1 payload bits.
Send a BER test pseudorandom pattern of 2^15 through T1 interface 10 for 5 minutes.
Router(config)# controller T3 1/0/0.1
Router(config-controller)# t1 10 bert pattern 2^15 interval 5 unframed
[
local
}] | [ |
payload fdl
}] | [ |
payload fdl
t1-number is T1 interface 1 to 28.
local loops the router output data back toward the router at the T1 framer and sends an alarm
indication signal (AIS) out toward the network.
[
unframed
Cisco 10000 Series Internet Router Troubleshooting
| { |
network line payload
]]]
ansi
[ | {
local network line
]]]
ansi
Cisco 10000 Series Router Line Card Configuaration Guide
Creating a T3, VT, or AUG Controller
]
} | [ [
remote line fdl
| } | [
payload remote line
Guide.
{ |
ansi
[ { |
fdl ansi
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