----- Original Message ----- > From: "Mikael Abrahamsson" <swm...@swm.pp.se> > To: "Jean-Francois Mezei" <jfmezei_na...@vaxination.ca> > Cc: Nanog@nanog.org > Sent: Monday, November 21, 2016 2:53:41 AM > Subject: Re: Voice channels (FTTH, DOCSIS, VoLTE)
> 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. That is congruent with my understanding of how cableco voice is provisioned; it has different rules WRT VoN -- specifically about 911 -- because the cable company segregates it and handles it differently (your cablemodem is expected to be tied to your service address -- or whatever terminal device does the voice). Cheers, -- jra -- Jay R. Ashworth Baylink j...@baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274
