SNR-Not working for AT&T users only

[Alex Stanton]

So one of my customers is having a problem with their single number reach. It rings the desk phone properly,  but does not ring the users cell phone. After quite a bit of testing with different cell phone's, It was found that all AT&T phones (tested 3 different ones) would not ring along with the desk phone. Verizon and Sprint cell phones rang with the desk phone. Any thoughts? Thanks!

[George Thomas]

Will you be able to post debugs from the gateway? If it has a PRI, debug isdn q931, if its SIP, debug ccsip messages.

[Alex Stanton]

George,

Thanks for the response. I have actually opened a TAC case on this issue. But, I did run the isdn debug, and you can see a disconnect. Signs tend to point to the problem being on the service providers side. 

[George Thomas]

Speculating here, but try to set the ISDN Plan/type appropriately if its not being set correctly.

[Alex Stanton]

Thanks for the suggestion. I'll look into this.

[Alex Stanton]

The fix ended up being under the PRI configuration in CUCM. unchecking the "Redirecting Number IE Delivery— Outbound " box fixed the issue. Thanks for the assistance.