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Harald Welte laforge at gnumonks.orgHi Mychaela,
On Mon, May 29, 2017 at 12:21:38PM -0800, Mychaela Falconia wrote:
> On 5/29/17, Harald Welte <laforge at gnumonks.org> wrote:
> > d) some modems expose voice as "GSM codec frames over UART"
>
> You got me curious here: are there any modems out there other than
> FreeCalypso that offer the quoted special feature? Someone actually
> paid me to add this special feature to FreeCalypso a little over a
> year ago, so I reason that it must be sufficiently non-standard that
> they couldn't find a commercial off-the-shelf modem that can do this
> feat.
I've definitely seen this in commercial modems.
If I remember correctly, it was the Gemalto EHS-6, which can disable the
GPS uart and re-cycle that UART for the audio frames. It might also
have been a Quectel UC-20. Now that I think more about it, I think it
was the UC-20.
--
- Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/
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