how to configure a t1 controller on a 2901 router?

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02-02-2011 05:29 PM - edited 03-04-2019 11:17 AM
hi,
i have trouble to get the serial card (2nd genteration T1 card) on up/up state on a 2901 router.
the SP guy who installed the rj48 at the demarc says it was tested good.
For some reason, it is on up/down state no matter what i tried. Can someone please look at the config below to see if something obviously missing here?
my config is as follows:
card type t1 0 0
!
controller T1 0/0/0
cable length long 0db
channel-group 0 timeslots 1-24
!
interface serial0/0/0:0
ip adress x.x.x.x 255.255.255.252
(i configured this as ESF frame, B8ZS...although it did not show up on the real config, must by default)
Thanks.
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02-02-2011 07:57 PM
I believe it defaults to HDLC encapsulation. Try typing in "encapsulation ppp" under the serial interface.

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02-03-2011 05:40 PM
ppp encap fixed the problem. the default was hdlc.
Thank you!
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02-03-2011 05:50 AM
Hi,
Make sure that you have the same lineCode and Framing Set on both sides of the Router, After this, you need to Shut/noShut the Controller and try to do loop testing with ISP in case if the issue persists.Controller Config Should be something like this below For Eg:,
card type t1 0 0
!
controller T1 0/0/0
framing esf
linecode b8zs
cablelength long 0db
channel-group 0 timeslots 1-24
!
Thanks,
Richard.
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02-03-2011 06:16 AM
Hi,
The interfaces should show up regardless of whether you configure them.
When you do a sh run or a sh interfaces you should see all available interfaces in the router whether enabled/disabled or configured/unconfigured. I would suggest you to reseat the WIC cards and make sure they are detected.
Find the below config may help...
controller t1 0/0
framing esf (should match the other side mostly esf)
line code b8zs ( do )
clock source independent
ds0-group 1 timeslots 1 - 10 type fx0-ground-start
Here most of the config depends on the type of device you are connecting to. If connecting to Telco/ISP they may give you some details like framing, line coding etc. You can also configure the Pri-group if you want to use CAS.
Please rate if this helped you...
Regards,
Naidu.
