Hi everyone, I am trying to integrate GPT Realtime with FreeSWITCH using TLS SIP. The call connects successfully, but I cannot hear any audio from GPT. Additionally, the call hangs up automatically after about 2 seconds. I have verified the SIP connection and TLS configuration, but the issue persi…

I’m getting the same. Is your server behind NAT by any chance?

we have tested without nat still huangp

Oh bummer. Very frustrating indeed!

Did you figure it out? I’m trying to connect freeswitch to the realtime sip, but can’t make it speak. I ran on all the logs and sip communication, everything looks good.

I use the same software but I can’t get it working. Could you post your dialplan connecting to the openai sip server ?

I use gpt realtime on freeswtich by tls sip,alway can't hear gpt sound,and it will hangup after 2s

API

Sean-Der September 4, 2025, 7:07pm 5

This is fixed now! I posted the reason it was broken here Realtime SIP & NAT no audio sent to client - #6 by Sean-Der

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I use gpt realtime on freeswtich by tls sip,alway can't hear gpt sound,and it will hangup after 2s

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