Table of Contents
Advertisement
Configuring a Channelized T3 Link
Setting the Yellow Alarm Configuration for a T1 Line
You can use the [no] t1 t1-line-number yellow {detection | generation} command (where
t1-line-number is 1 to 28) to turn the detection or generation of a yellow alarm on and off. When you
select SF framing, you should consider using the no t1-line-number yellow detection command to turn
off yellow alarm detection, because the yellow alarm can be incorrectly detected with SF framing.
Setting the Clock Source on a T1 Line
You can set the internal or line (network) clock source for a T1 line with the t1 t1-line-number clock
source {internal | line} controller command where:
•
•
•
The default clock source is internal.
Examples follow:
•
•
Note
Normally the T1 link should be configured to use the line clock recovered from the network. In cases
where the network does not provide the clock, such as two PA-MC-T3-EC port adapters connected
back-to-back, one end of the T1 link must be set to internal clock and the other end to line clock.
Setting the FDL Configuration for a T1 Line
To enable and disable one-second transmissions of performance reports through the facility data link
(FDL) (per ANSI T1.403 specification), you must use the t1 t1-line-number fdl ansi command where:
t1-line-number is 1 to 28 on both ends of the connection.
You can use this command only when the T1 framing is ESF.
Note
Use the no form of the command to disable remote performance reports.
Setting Loopbacks on a T1 Line
If you have difficulty with the PA-MC-T3-EC configuration or installation, you can troubleshoot the port
adapter using the loopback command. Specify loopback for a T1 line using the following t1
t1-line-number loopback [local | network | remote]command where: t1-line-number is 1 to 28.
PA-MC-T3-EC Port Adapter Installation and Configuration
5-16
t1-line-number is 1 to 28.
internal selects an internal clock source.
line selects a network clock source.
Instruct T1 line 1 to use an internal clock source.
The example that follows is for a port adapter in slot 1 of a Cisco 7200 VXR router.
Router(config)# controller T3 1/0
Router(config-controller)# t1 1 clock source internal
Instruct T1 line 16 to use a line clock source received from the network.
The example that follows is for a port adapter in slot 1 of a Cisco 7200 VXR router.
Router(config)# controller T3 1/0
Router(config-controller)# t1 16 clock source line
Chapter 5
Configuring the Channelized Mode
OL-10589-02
Advertisement
Table of Contents
