[OpenSIPS-Users] Help : Issues in OpenSIPS 3.5 Implementation

[jeremy ardley]

On 13/8/25 19:48, Karthikeyan via Users wrote:
>
> Team,
>
> We have implemented OpenSIPS Server 3.5 in Ubuntu 24,04,
>
> We were able to configure the entire setup through the following 
> YouTube videos
>
> https://www.youtube.com/watch?v=o5BW0r1RKFo
> https://www.youtube.com/watch?v=QJuKMq3W86U&t=13s 
> <https://www.youtube.com/watch?v=QJuKMq3W86U&t=13s>
> https://www.youtube.com/watch?v=33xtIuCyWhw&t=149s 
> <https://www.youtube.com/watch?v=33xtIuCyWhw&t=149s>
> https://www.youtube.com/watch?v=1KL2kMkdWco
> https://www.youtube.com/watch?v=oweTSW61cH8&list=PLJ_HEpr29ISM3Mj9PhJBlKr9GAxSeohAj&index=15 
> <https://www.youtube.com/watch?v=oweTSW61cH8&list=PLJ_HEpr29ISM3Mj9PhJBlKr9GAxSeohAj&index=15>
>
> We are facing following issues
>
>  1. In some phones when we make SIP call there is no voice but in
>     other phones, we can hear the voice clearly.
>  2. When we make SIP call with in the same WIFI network then there is
>     no voice.
>  3. SIP call is not getting disconnected even when the call ends.
>
> We have attached the OpenSIPS config we have implemented for your 
> reference.
>
> Please help us to fix these issues.
>
> Regards
>
> Karthik
>

The SIP voice and SIP command channels are completely separate IP 
systems. One is the Session Initiation Protocol (SIP) that establishes 
and controls a call and one is RTP which is Real Time Transport protocol 
(RTP) that carries the audio. For voice to work between devices the RTP 
protocol must be in the same LAN network, on public IP addresses, or 
have a proxy to communicate.

Voice not working says the SIP is communicating correctly but RTP is not 
working in or across networks.

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