[Freeswitch-users] SIMCOM LTE modems with USB Audio

[Giovanni Maruzzelli]

please do it, then let us know. Maybe do it for free, and donate it to the
community.

Thanks in advance



On 25 April 2018 at 23:30, Stanislav Sinyagin <ssinyagin at gmail.com> wrote:

> probably the most flexible option would be a small standalone daemon
> that links the SIMCOM modem audio with a virtual PortAudio device.
> Then you can have this stream in FreeSWITCH or in any other software
> that is able to communicate with PA.
>
>
>
> On Wed, Apr 25, 2018 at 1:49 PM, Stanislav Sinyagin <ssinyagin at gmail.com>
> wrote:
> > Yes, it's clearly written in their documentation, that raw PCM is sent
> in an
> > USB UART device.
> >
> > Mod_gsmopen is too imperfect, to say politely. It's easier to create a
> new
> > module for UART audio than trying to adapt gsmopen for new modems.
> >
> > So, it only needs a budget for development.
> >
> >
> >
> >
> >
> > On Tue, Apr 24, 2018, 22:01 Tom Hartnett <hartnett.tom at gmail.com> wrote:
> >>
> >> Funny you mention the Simcom as I'm testing the 7600AH now (unrelated to
> >> Freeswitch). The modems are odd in that they don't create a USB audio
> >> endpoint in the traditional sense. You have to move the PCM voice over
> their
> >> UART interface. That requires a little extra work as I haven't really
> found
> >> a good driver to manage that.
> >>
> >> I'm really interested in these because I want to support VoLTE on AT&T.
> We
> >> haven't got that running yet, and my AT&T contact says there was an
> issue
> >> with provisioning this model in their database. Hopefully that will be
> fixed
> >> later this week.
> >>
> >> On Tue, Apr 24, 2018 at 3:28 PM, Stanislav Sinyagin <
> ssinyagin at gmail.com>
> >> wrote:
> >>>
> >>> hi,
> >>>
> >>> I wrote about a year ago about SIMCOM SIM7100 series LTE modems and
> >>> that they support USB audio. Now the vendor offers also SIM7500 and
> >>> SIM7600 modems, also with USB audio, and in addition these newer
> >>> models support 16-bit audio streams.
> >>>
> >>> Unfortunately I didn't find the free time to make a FreeSWITCH module
> >>> for them, but if someone wants to sponsor such a development, or
> >>> actually develop it, I'll be glad to work together.
> >>>
> >>> I've got a SIM7100E modem, and SIM7500E is ordered and is on the way.
> >>>
> >>> The SIM7500 series is cheaper, but it only supports 10Mbps downstream
> >>> for mobile data. The SIM7600 supports up to 150Mbps. But for voice
> >>> applications, data transfer rate should be irrelevant in any way.
> >>>
> >>>
> >>> cheers,
> >>> stanislav
> >>>
> >>> ____________________________________________________________
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> >>
> >>
> >> ____________________________________________________________
> _____________
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> >>
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> >> http://www.cluecon.com
> >>
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> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
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>
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-- 

Sincerely,

Giovanni Maruzzelli
OpenTelecom.IT
cell: +39 347 266 56 18
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