Table of Contents
Advertisement
Configuring a Channelized T3 Link
•
•
Use of the 0xFF HDLC idle pattern may help prevent false yellow alarms in the remote T1 device when
Note
SF framing is used.
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 1–28) 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 controller command:
t1 t1-line-number clock source {internal | line}
where:
•
•
Examples follow:
PA-MC-2T3+ Multi-Channel T3 Port Adapter Installation and Configuration
5-12
The example that follows is for a port adapter on a VIP in interface processor slot 1:
Router(config)# controller T3 1/0/0
Router(config-controller)# t1 6 framing sf
The example that follows is for a port adapter in slot 1 of the Cisco 7200 series routers:
Router(config)# controller T3 1/0
Router(config-controller)# t1 6 framing sf
Other options for setting Super Frame (SF) include:
router(config-controller)#t1 6 framing ?
esf
Extended Superframe Framing format
sf
Superframe Framing Format
router(config-controller)#t1 6 framing sf ?
hdlc-idle
Specify the HDLC idle pattern on a T1
<cr>
router(config-controller)#t1 6 framing sf hdlc-idle ?
0x7E
Use 0x7E as HDLC idle pattern
0xFF
Use 0xFF as HDLC idle pattern
router(config-controller)#t1 6 framing sf hdlc-idle 0x7e ?
Set ESF framing format for T1 line 16 as follows:
The example that follows is for a port adapter on a VIP in interface processor slot 1:
Router(config)# controller T3 1/0/0
Router(config-controller)# t1 16 framing esf
The example that follows is for a port adapter in slot 1 of the Cisco 7200 series routers:
Router(config)# controller T3 1/0
Router(config-controller)# t1 16 framing esf
t1-line-number is 1–28.
The default clock source is internal.
Chapter 5
Configuring Channelized mode for the Cisco PA-MC-2T3+
OL-3526-05
Advertisement
Table of Contents
