I’ve never gotten AT&T to respond to issues, including the fact the device eats the SIP packets, and some types of SIP packets can actually cause their device to reboot as well.
It’s been a few years now since I really chased this down, but beware all of these ‘helpers’, including the Cisco SIP-ALG are broken. It’s more damage introduced by these CPE devices (like broken DNS proxies, etc). - Jared > On Jan 27, 2015, at 9:47 AM, Brad Bendy <b...@1stclasshosting.com> wrote: > > They are saying this CPE has no ALG in it, but they can enable DMZ, which > acourse made zero difference. > > What I do find funny is they escalated the problem to Tier-2 and wanted to > enroll the customer in premium tech support for $15 a month, because the > Internet signal is strong and is not causing the problem, sigh. > > Back to trying port 5061 it appears! > > On Mon, Jan 26, 2015 at 8:44 PM, Christopher Morrow <morrowc.li...@gmail.com> > wrote: > I think this is due to the CPE using a particular ALG ... (from > recollection having never been a UVerse customer, but having sat > through a long, long, long set of discussions about the > merits/demerits of sip blocking) > > On Mon, Jan 26, 2015 at 10:22 PM, Jared Mauch <ja...@puck.nether.net> wrote: > > Yes. If you move to another port, e.g.: 5061 it works fine. > > > > If you’re running on a Linux based system, you can do this: > > > > /sbin/iptables -A PREROUTING -t nat -i eth1 -p udp --dport 5061 -j REDIRECT > > --to-port 5060 > > > > on the host to remap 5061 -> 5060 with no application change. > > > > - Jared > > > >> On Jan 26, 2015, at 4:26 PM, Brad Bendy <b...@1stclasshosting.com> wrote: > >> > >> 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. > >> > >> -- > >> This message contains confidential information and is intended only for the > >> individual named. If you are not the named addressee you should not > >> disseminate, distribute or copy this e-mail. Please notify the sender > >> immediately by e-mail if you have received this e-mail by mistake and > >> delete this e-mail from your system. E-mail transmission cannot be > >> guaranteed to be secure or error-free as information could be intercepted, > >> corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. > >> The sender therefore does not accept liability for any errors or omissions > >> in the contents of this message, which arise as a result of e-mail > >> transmission. If verification is required please request a hard-copy > >> version. 1st Class Hosting, LLC. 1712 Pioneer Ave, Suite 1854, Cheyenne, WY > >> 82001 > > > > > > > > > > This message contains confidential information and is intended only for the > individual named. If you are not the named addressee you should not > disseminate, distribute or copy this e-mail. Please notify the sender > immediately by e-mail if you have received this e-mail by mistake and delete > this e-mail from your system. E-mail transmission cannot be guaranteed to be > secure or error-free as information could be intercepted, corrupted, lost, > destroyed, arrive late or incomplete, or contain viruses. The sender > therefore does not accept liability for any errors or omissions in the > contents of this message, which arise as a result of e-mail transmission. If > verification is required please request a hard-copy version. 1st Class > Hosting, LLC. 1712 Pioneer Ave, Suite 1854, Cheyenne, WY 82001
