AT&T uVerse blocking SIP?

Brad Bendy bb at
Mon Jan 26 21:26:46 UTC 2015

Has anyone seen issues where a end user on uVerse trying to connect to
either another provider or AT&T non uVerse (in this case DIA) is having SIP
blocked? SIP leaving the uVerse network going to another uVerse DSL account
is fine, but it appears soon as it leave the uVerse network all SIP traffic
is blocked?

It appears others have seen this problem, some say it's a modem issue, some
say they are truly blocking it. Ive yet to call uVerse support yet as im
guessing ill get no where.

Thanks for any insight on this.

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