[Spce-user] Calls comming off hold getting different RTP port

[Andrew Pogrebennyk]

Hi John,

Could you provide us the part of /var/log/ngcp/rtp.log corresponding to
this call as well as time when re/INVITE was received or proxy log?

On 10/08/2012 02:09 PM, John Murray wrote:
> Hello,
> 
>  
> 
> We have an upstream PBX – SPCE – downstream PBX.
> 
>  
> 
> The user on downstream PBX calls user on upstream PBX. While
> transferring the call to another user on upstream PBX the caller is put
> on hold.
> 
>  
> 
> The hold is a re-INVITE via SPCE to the user on the downstream PBX
> sending them ‘a=sendonly’ in a re-INVITE sdp.
> 
>  
> 
> In a subsequent re-INVITE the SPCE sends ‘a= sendrecv’ to take the call
> off hold _/but/_ with a new rtp port.
> 
> This confuses the PBX as it does not support rtp port change in a call
> and send the audio to the old port giving one way audio.
> 
>  
> 
> Is there any way to keep the rtp port constant?
> 
>  
> 
> Many thanks
> 
>  
> 
> John
> 
> 
> 
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