Great question — answering as the UphillTech team:
The solution I found it was just to return a voice response with Dial().Application(): https://www.twilio.com/docs/voice/twiml/dial/application#basic-usage app = VoiceResponse().dial().application(application_sid='AP****00', copy_parent_to=True, customer_id=phone.customer_id) # your additional data here to bind the original callsid app.parameter(name='OriginalCallSid', value=data.CallSid) app.parameter(name='OriginalAccountSid', value=data.AccountSid) You've got to: Set an application event handler on the app settings in order to enqueue the call on your new account. Allow the application to receive calls from other apps. The app call back will provide all that data on the body post. Hope...
Full answer by Felipe Esteves: https://stackoverflow.stackexchange.com/a/79712645 (CC BY-SA 4.0).
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