[Freeswitch-users] Data modem (V32, V92) with SpanDSP

Fri Feb 20 23:39:50 MSK 2015

Yes audio inside of a data connection over a data connection is how it
should be done.  /me bashes head on desk, this seems futile... There is
this thin called the INTERNET, its already a data network, we should
probably start using it! :P

On Fri, Feb 20, 2015 at 11:37 AM, François <fdelawarde at wirelessmundi.com>
wrote:

>  I don't know about v.150, but lots of devices (telecare and other sh..ty
> IoT stuff) use V32 over crappy GSM modems. Right now can't talk to those
> without a "real" modem.
>
> Yeah, I know in 2015 they should be using IP over modern data connections
> (or even GPRS), but you know how it is...
>
> AFAIK, SpanDSP seems to be missing those "data modem" stuff (V32 at 9600
> and V92 at 56k)...
>
> François.
>
>
>
> On 02/20/2015 05:13 PM, Michael Jerris wrote:
>
> One of the reasons that has kept any work ever happening on this is we
> can't seem to find a single device that actually claims to support v.150.
> Spandsp already has quite a bit of the modem code for 9600 and 14400 but
> its not exposed to a data modem interface.
>
>
>  On Feb 20, 2015, at 11:08 AM, Brian West <brian at freeswitch.org> wrote:
>
>  You want v.150.1, GOOD LUCK!
>
> On Fri, Feb 20, 2015 at 9:13 AM, François <fdelawarde at wirelessmundi.com>
> wrote:
>
>>  Interesting.. Looks like some type of T38 for data-modem over VoIP.
>> Unfortunately FS/SpanDSP don't support this AFAIK.
>>
>> Also I was thinking of using a PRI line (freetdm) to avoid VoIP issues.
>>
>> Thanks,
>> François.
>>
>>
>> On 02/20/2015 03:53 PM, Sergey Safarov wrote:
>>
>> I not know FS support this scenario but this may be help you
>>
>>  http://www.voip-info.org/wiki/view/Modem+over+VOIP
>>
>> http://www.cisco.com/c/en/us/td/docs/ios/12_4t/12_4t4/mer_cg_15_1_4M.html
>>  https://support.sonus.net/display/VXDOC/V.150.1+Device+Support
>>
>> On Fri, Feb 20, 2015 at 5:36 PM, François <fdelawarde at wirelessmundi.com>
>> wrote:
>>
>>> Self answer: Apparently SpanDSP does not support V32 nor V90/V92.
>>>
>>> Also I can't seem to find any other solution. The objective was to fetch
>>> data from remote GSM sensors using simple protocols over V32 and
>>> similar...
>>>
>>> François.
>>>
>>>
>>> On 02/20/2015 11:07 AM, François wrote:
>>> > Hi all,
>>> >
>>> > As seen in the HylaFax wiki entry, mod_spandsp can be used as a
>>> soft-modem.
>>> > https://wiki.freeswitch.org/wiki/HylaFax
>>> >
>>> > Can it also be used as a data modem (not just fax modem) with V32, V92
>>> > or similar protocols?
>>> >
>>> > If not, does anyone know of any data-modem software that could work
>>> > along with FreeSWITCH?
>>> >
>>> > Thanks,
>>> > François.
>>> >
>>> >
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>>
>>
>>
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>
>
>
>  --
>
> *Brian West*
> brian at freeswitch.org
>
>
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-- 

*Brian West*
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