Verizon Wireless LTE/4G and SIP Header Manipulation

[morrowc.lists at gmail.com (Christopher Morrow)]

On Tue, Sep 22, 2015 at 12:03 PM, Mark Stevens <manager at monmouth.com> 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.
>

I'm shocked that the cellular carrier is making over-the-top phone
calls non-functional. I'm sure they'll agree to meet you at their CO
so you can do the proper work request sometime between 6am and 7pm in
2 weeks time.

go incombancy!

> Thanks
>
> Mark