Make sure you are configured to allow them to loop you back.
 
T1 -> Trunk Settings -> Response to Remote Loopback -> Respond
 
In most cases a telco not being able to loop you is normal.
However, if you use the setting above, it's possible it will allow them to loop you.
-----Original Message-----
From: usr-tc-bounces+adam=semo.net@mailman.xmission.com [mailto:usr-tc-bounces+adam=semo.net@mailman.xmission.com] On Behalf Of Rodney Rindels
Sent: Thursday, December 23, 2004 4:33 PM
To: USR-TC@mailman.xmission.com
Subject: [USR-TC] TC 1000 Failing D Chanell loopback

Our telco can't seem to get out D channel to loop?
 
And specific thing I should look for in the configuration.
 
They are equating to a possible timing issue?
 
 
Thanks in Advance,
 
Rod