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New Member

7206 router with PA-MC-8T1 "channel-group" command?

I am trying to understand the significance of "channel-group #" command. The document said this number can be 0-23. There is only one PA-MC-8T1 port adapter installed. I was going to use "channel-group 0" for controller T1 3/0, "channel-group 1" for controller T1 3/1, and so forth. But I have couple "multilinks" setup, and I wonder if I should use the same "channel-group" numbers for these bundled interface? Not that it's necessary, but probably better for documentation. Or what would be the recommendation? Thanks in advance.

controller T1 3/0

framing esf

clock source internal

linecode b8zs

channel-group 0 timeslots 1-24

no yellow generation

no yellow detection

controller T1 3/1

framing esf

clock source internal

linecode b8zs

channel-group 1 timeslots 1-24

no yellow generation

no yellow detection

2 REPLIES
New Member

Re: 7206 router with PA-MC-8T1 "channel-group" command?

The "channnel-group" command in your case probably exists to allow you to do fractional T1 if you so desired. For example, lets say on controller T1 3/0 you wanted to have two 768k circuits. The config would probably look like this:

controller T1 3/0

channel-group 0 timeslots 1-12

channel-group 1 timeslots 13-24

Having said that, if you don't plan on doing fractional T1, you can configure each controller with channel-group 0 for timeslots 1-24. As always, I could be wrong :) Good luck

Re: 7206 router with PA-MC-8T1 "channel-group" command?

The channel-group is only significant to each T1 separately. ie: channel-group 0 for T1 3/0 is different than channel-group 0 for T1 3/1, so you can really use them over as much as you like. After you configure the controller for T1 3/0, you will end up with a corresponding # of serial interfaces for that T1. ie: Lets say you break up the T1 3/0 into two channel-groups. One that is 2/3rds of a T1 16 channels), one that is 1/3rd of a T1 (8 channels).

controller T1 3/0

channel-group 0 timeslots 1-18

channel-group 1 timeslots 19-24

You would then get 2 serial interfaces

serial 3/0:0

ip address XXXX

serial 3/0:1

ip address XXXX

I believe the channel-group corresponds to the ":0" or ":1" at the end of both of those interfaces, so if you used channel-group 5 instead of 1, it would be

serial 3/0:5

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