nanog mailing list archives

Re: Verizon Wireless LTE/4G and SIP Header Manipulation


From: joel jaeggli <joelja () bogus com>
Date: Tue, 22 Sep 2015 09:24:58 -0700

On 9/22/15 9:03 AM, Mark Stevens wrote:
Hi All,

Has anyone seen that something (most likely an alg) on Verizon's LTE/4G
network is rewriting SIP headers,in particular From Tag identifiers? We
cannot make a SIP call from our cellphones (using cellular data) beyond
30 seconds because the TAGs are rewritten and the destination Asterisk
server drops the call because of this.

sounds like a really good application for TLS

Thanks

Mark



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