I'd be glad to, but I don't have a budget on my own. Need to find the funding first. On Thu, Apr 26, 2018, 21:15 Giovanni Maruzzelli <gmaruzz@gmail.com> wrote:
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@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@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@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@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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_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com
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Sincerely,
Giovanni Maruzzelli OpenTelecom.IT cell: +39 347 266 56 18 _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
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