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

François fdelawarde at wirelessmundi.com
Fri Feb 20 18:13:27 MSK 2015


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 <mailto: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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