Re: [OpenSIPStack] Issue Regarding RTP seems to be bypassing OpenSBC when using Gafachi as a service provider.

[Joegen E. B. <joe...@gm...>]

Would Gafachi be able to route RTP to 192.168.96.115?  This sees to be 
an internal private address.  You need to set the Static RTP Address to 
the public interface of your NAT router and make sure that your NAT maps 
the RTP ports properly.  RTP port range of OpenSBC 30000-35000.  Lastly, 
run your SBC in B2BUA mode.  Your INVITEs are getting proxied and RTP 
proxy does not apply to plain proxied requests.


Ashok Gupta wrote:
> Hello,
>  
> I am having some issue in getting RTP packets when using Gafachi as a 
> service provider.
>  
>
> When I use a network configuration like
>  
> Xlite UA (Outbound) (.64) <--------> OpenSBC (.115) <-----------> Xlite UA
> (Inbound) (.60)
>  
> * Outbound UA is registered on OpenSBC
>  
> * Inbound UA is registered on OpenSBC
>  
> * A route exists from OpenSBC to Xlite UA (Inbound) (.60)
>  
> Rtp packets are coming fine at opensbc.
>  
>
> But when I am having a configuration like
>  
> Xlite UA (Outbound) (.64) <--------> OpenSBC (.115) <-----------> Xlite UA
> (Inbound) (.60)
>  
> * Outbound UA is registered on Gafachi       //Sip Proxy is set to opensbc
>  
> * Inbound UA is registered on Gafachi
>  
> * A route exists from OpenSBC to Gafachi UA (Inbound) (.60)
>  
>
> I am not getting RTP packets at opensbc side (SIP packets are coming 
> fine,RTP seems to be bypassing OpenSBC).When I looked at traces I 
> found that In this case when opensbc Route sip Invite to Gafachi SDP 
> is not getting change.
>  
> In my config settings with Gafachi  I am having
>  
> SBC Mode  FullMode
> Interface Address  opensbc machine Ip(192.168.96.115)
> Alwayes Proxy media true
> Static RTP media address opensbc machine Ip(192.168.96.115)
>  
> B2BUA Routes--> [sip:*@gafachi] sip:"sipproxy address"
> Relay Route--> [sip:*@gafachi] sip:"sipproxy address"
>  
> Upper Registration Routes-->[sip:*@gafachi] sip:"sipproxy address"
>  
>
> Also
> >>Do we need a external NAT router to have this possible?
>  
> Attached are the level 5 logs with Gafachi call and without gafachi call.
> I'll be thankful for any guidance on what's going wrong.
>  
> Regards
> Ashok
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