serial up / line protocol down on 1900 router with single t1 connection

[cecodoorit]

Have been battling a router connection to new ATT t1 connection.  Router was configured and sent from sister company to this new location.  We have had ATT tech test circuit and it tests good, had cat5 cable tested from ATT to router, it tests good.    I continue to get serial up/ line protocol down status though and cant communicate to it from wan.  Any advice would be appreciated.

[John Blakley · Accepted solution]

Try changing below:

controller t1 0/0/0

framing esf

linecode b8zs

See if that helps..

In my original post, I noticed that you had only 1 channel provisioned and I stated that you should change your timeslots from 24 to "1-24" without seeing the bandwidth statement on the serial interface. Do you have only a 64k circuit or is it artificially lowered for other purposes?

Can you post "show controllers t1 0/0/0"?

HTH,

John

[cecodoorit]

That did it!  thank you for the quick response

[Peter Paluch]

John,

Good work! I haven't spotted that. I haven't ever had a working experience with true T/E carriers. I am envying you somewhat...

Best regards,

Peter

[John Blakley]

Thank you for the kind words Peter! I follow your conversations, and I have MUCH more to be envious of