[192775] in North American Network Operators' Group
Re: Voice channels (FTTH, DOCSIS, VoLTE)
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Mon Nov 21 02:54:29 2016
X-Original-To: Nanog@nanog.org
Date: Mon, 21 Nov 2016 08:53:41 +0100 (CET)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Jean-Francois Mezei <jfmezei_nanog@vaxination.ca>
In-Reply-To: <58329B31.3070806@vaxination.ca>
Cc: "Nanog@nanog.org" <Nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On Mon, 21 Nov 2016, Jean-Francois Mezei wrote:
> I need to verify some claims made by incumbents in Canada that VoLTE
> data travels on a totally separate channel between the phone and the
> antenna.
Typically it travels on another "bearer" compared to Internet traffic.
http://blog.3g4g.co.uk/2013/08/volte-bearers.html
Think of bearers as "tunnels" between the mobile core network and the
device. They have a lot in common with ATM PVCs in that they can have
different QoS characteristics. So the VoLTE bearer can have scheduling
priorities that means it'll always be low-latency and highest priority,
meaning it might work well when the "Internet" bearer does not.
--
Mikael Abrahamsson email: swmike@swm.pp.se
