AT&T Grants Denies Us Mobile VoIP Freedom (Tom Keating)
VOIP News writes…
The big news last week was how AT&T grants denies us mobile VoIP freedom. Just last week I wrote how AT&T had “granted” us mobile VoIP freedom by finally allowing SIP port 5060 on their 3G data network. I was able to use siphon, a SIP-based application on my jailbroken iPhone to register with TMC’s IP-PBX and make/receive phone calls. Well apparently, AT&T must read my blog or something, because…
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Tags: AT&T, iPhone, Mobile Voip, SIP, VOIP





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