Voice channels (FTTH, DOCSIS, VoLTE)

Mikael Abrahamsson swmike at swm.pp.se
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.


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

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