[Freeswitch-users] A primitive way of getting VoLTE recordings in FreeSwitch. Looking for better ideas.

[Brian West]

Or you can go get an interconnect with each carrier so they can hand off to
you in AMR-WB, but we don't have the codec, so thats a bust too.

/b


On Mon, Dec 5, 2016 at 8:26 AM, Francis <sms at icefire.qza.net.au> wrote:

> Basically, you want voice on LTE, confirmed in the specifications. Most
> of these cards are still using 3G/umts for voice, even though they use
> LTE for data. They are often used in laptops and tablets. Think
> Sierra/Qualcomm, Huawei, uBlox etc. There's lots of them.
>
> Francis
>
>
> On 5/12/2016 10:11 PM, Oivvio Polite wrote:
> > On mån, dec 05, 2016 at 09:46:08 +1000, Francis wrote:
> >> One option is using mini-PCIe WAN cards that are VoLTE capable, using
> >> the I2S bus for bidirectional digital audio. The sticking point with
> >> this approach is that you need a backplain card with an I2S to USB
> >> bridge in order to capture the audio. This would probably work best with
> >> mod-gsmopen.
> >>
> >> I searched high and low for such a thing, and managed to find one
> >> Russian firm that had a single slot device. The downside is that it is
> >> horrendously expensive (about $400 euros from memory), considering it
> >> only has about $5 worth of components on it. There are proprietary
> >> backplains, but so are their connectors, which limits you to their own
> >> line of daughter cards.
> >>
> >> Francis
> >>
> > Thanks!
> >
> > When we say that a card is VoLTE capable, what do we mean? Is VoLTE one
> > or many different protocols? Or to put it another way: When I google
> > these WAN cards what should I look for?
> >
> > Oivvio
> >
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-- 

*Brian West*
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