I’m reaching out because I’m experiencing a systematic issue with outbound calls dropping early when using Retell with Twilio (SIP trunking), and this is now affecting multiple users/clients beyond just my own account. Summary of the issue I manage several Retell projects for different clients, all using voice agents connected to Twilio via SIP trunking. These setups have been working perfectly for weeks with the same configuration (SIP, Twilio, agent settings, n8n workflows, etc.). Recently, outbound calls started to drop after a short time (around 30–40 seconds or even less), without any change on my side. The problem occurs across: Multiple Retell accounts (mine and my clients’). Multiple Twilio accounts / SIP trunks. Multiple agents that share the same model / configuration pattern. What I’m seeing technically On the Retell side (example): Session IDs like call_a47bad8582ded0a3b57a2f77867 and call_93a10a9987877f59b781f8e2944 show: Channel type: phone_call Duration around 30–40 seconds, or status registered with total_duration_seconds: 0 and combined_cost: 0. End Reason: often user hangup Session Outcome: Unsuccessful #1216639382308782180

Hello @Hugo Tellez , do you have the pcap file for this call ?

Omar, yes, I’m attaching the pcap file. Thank you very much for your cooperation. https://cdn.discordapp.com/attachments/1473741242897531001/1473761716801241088/call-log-CA219c26318a350d258a4f74513dc94ca7.pcap?ex=6997630e&is=6996118e&hm=37ce882f8ca39006897c60519e434910cd1aefa95764c50cab2fb6c8b1bab8db&