[Freeswitch-users] FS as Media Gateway Only

David Ponzone david.ponzone at gmail.com
Mon Jun 7 04:29:24 PDT 2010


Mike,

You're right, it can be achieved with SIP now that I think a bit more  
about it.
The idea was to allow adding multiple media gateways when required, so  
the media gateways should not be facing the carriers as some of them  
do SIP-filtering, but should only be advertised in the SDP.

So SIP-only boxes (doing bypass-media) should face the carriers to  
handle the trunking.
In the middle, we would then have the media gateways, doing SIP and  
mostly RTP.
But I guess we dont want customers to register and to send calls to a  
media gateway, so we need another set of SIP boxes on the other side,  
doing bypass-media also.

So it would like this:

                              ------sip-----FS-RTP-1-----sip------
FS-SIP-Internal-1 ------sip-----FS-RTP-2-----sip------FS-SIP- 
External-1----sip-----Carriers
                              ------sip-----FS-RTP-3-----sip------
FS-SIP-Internal-2 -------sip----FS-RTP-4-----sip------FS-SIP- 
External-2-----sip----Carriers
                              -------sip----FS-RTP-5-----sip------

Thanks to bypass-media, the RTP streams would go from customer to FS- 
RTP-x to Carriers, and reverse.
And I don't see any reason why the same set of FS-SIP boxes could not  
be used for both internal and external borders.

Is there something wrong in this ?

Code, does it help ?

David Ponzone  Direction Technique
email: david.ponzone at ipeva.fr
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Le 05/06/2010 à 19:54, Michael Jerris a écrit :

> Why would it be an advantage to have your media proxies use another  
> protocol?
>
> Mike
>
> On Jun 4, 2010, at 1:59 AM, David Ponzone wrote:
>
>> It doesn't solve the issue that all the media servers will do  
>> signaling too, and will talk SIP with the carriers.
>> So the carriers will need to allow all the media servers .
>>
>> The only clean solution to avoid that, I think, is to have  
>> signaling boxes allocating resources from media servers with  
>> another protocol than SIP.
>> RTPproxy does that I think, but I am not sure how it works.
>>
>> David Ponzone
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