Great question — answering as the UphillTech team:
I have just fixed the same problem. Please check if the Params set in your javascript twilio client and the back end to get the params are matching. The back-end code that gets the twilio voice call request let voiceResponse = new VoiceResponse(); voiceResponse.dial({ callerId: process.env.TWILIO_NUMBER, }, request.body.number); The front-end code Twilio.Device.connect({ number: "+86xxxxxxxxxxx" }); You must confirm that the key "number" is the same for front-end and back-end. Best luck
Full answer by hongdeshuai: https://stackoverflow.stackexchange.com/a/65361997 (CC BY-SA 4.0).
Need it done for your business? UphillTech.
