[Freeswitch-users] freeswitch on wifi

[Dmitry Lysenko]

Hello, Shlomi

RTP voice through WiFi is not so good, but it depends on settings and
currently available bandwith of WiFi routers, your and neighbors.
I have ARM device with Freeswitch and mod_gsmopen and should said without
WiFi in the voice path it work much better.
I have checked a lot of SIP-UA and codecs. Currently I use g.729a, as it
work slightly better.
This problem can be decreased by increasing jitter buffer size, but in this
case delay in voice can be too large. (GSM part already have noticeable
latency)

Best Wishes,
 Dmitry.


2014-06-18 18:11 GMT+03:00 Shlomi Agiv <shlomi.agiv at cell-buddy.com>:

> Hi Giovanni,
>
> First let me say it's an honor for me to hear from you.
> As someone who has done a lot of coding using(and also modifying a bit)
> the gsmopen, talking to the author feel to me like talking to a celebrity.
>
> So far, we've connected the gsmopen and managed to make and receive calls,
> send and receive sms, which work well.
> We haven't tested on wifi yet, should be done next.
>
> Two issues we haven't gotten around to debug, maybe you can help with:
> *ussd:*
> sending ussd always returns the text "just a ussd message" whatever i send
>
> *NORMAL_CIRCUIT_CONGESTION:*
> on occasion, when trying to make a call, we're getting
> 'NORMAL_CIRCUIT_CONGESTION' and we're not getting any incoming calls.
> Currently what we do is unload mod_gsmopen, remove and reinsert the usb
> stick, then load mod_gsmopen.
> This also doesn't always help since sometimes we can't unload the gsmopen
> module (it says 'model in use'). in that case we restart freeswitch and
> reinsert the usb stick.
> This might not be caused by the gsmopen, since we're controlling the
> messages coming from the sim, and we might be doing something wrong.
>
> Thanks,
> Shlomi Agiv
>
>
>
> On Wed, Jun 18, 2014 at 4:29 PM, Giovanni Maruzzelli <gmaruzz at gmail.com>
> wrote:
>
>> gsm voice quality will be good
>>
>> Codec choice is only relevant for the SIP leg, so use your normal choice
>> in term of bandwidth/cpu/ptime.
>>
>> Gsmopen does not use codec, it runs internally in raw signed linear
>> format.
>>
>> Let us (or me personally) know how the project goes.
>>
>> -giovanni
>>
>>
>>
>> Sincerely,
>>
>> Giovanni Maruzzelli
>> Cell : +39-347-2665618
>>
>>
>> On Wed, Jun 18, 2014 at 3:12 PM, Shlomi Agiv <shlomi.agiv at cell-buddy.com>
>> wrote:
>>
>>> We intend to put freeswitch on an arm powered portable device, which
>>> will connect using a usb gsm stick and will serve as a wifi/gsm router
>>>
>>> so, a call will connect two endpoints - one to the sip client through
>>> wifi, the other through mod_gsmopen to the gsm.
>>>
>>> How will the voice quality be? which voice codec is most recommended?
>>>
>>>
>>>
>>> _________________________________________________________________________
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>>> 
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>>
>> _________________________________________________________________________
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>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
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>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
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> http://wiki.freeswitch.org
> http://www.cluecon.com
>
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