Voice channels (FTTH, DOCSIS, VoLTE)

Mon Nov 21 07:53:41 UTC 2016

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 at swm.pp.se