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

[Christopher Morrow <morrowc.lists () gmail com>]

On Tue, Sep 22, 2015 at 12:22 PM, Christopher Morrow
<morrowc.lists () gmail com> wrote:
> On Tue, Sep 22, 2015 at 12:03 PM, Mark Stevens <manager () 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.

joking aside, are you sure the packets get mangledin VZW and not
elsewhere along the path? how would you be able to prove it?

> go incombancy!
>
> > Thanks
> >
> > Mark