[183951] in North American Network Operators' Group
Re: Verizon Wireless LTE/4G and SIP Header Manipulation
daemon@ATHENA.MIT.EDU (Christopher Morrow)
Tue Sep 22 15:51:05 2015
X-Original-To: nanog@nanog.org
In-Reply-To: <CAL9jLaZJezkHEfybP+rKfqTWok1uG7pWL729E7nrkazM8qv_8w@mail.gmail.com>
Date: Tue, 22 Sep 2015 15:51:02 -0400
From: Christopher Morrow <morrowc.lists@gmail.com>
To: Mark Stevens <manager@monmouth.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
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
