Link physical ip phone with Twilio via SIP

Question

I'm attempting to run a physical ip phone with Twillio via SIP and I'm missing something as the connection is not being made. Here is what I've done.

I setup a phone on twilio with incoming voice "A Call Comes In" set to this TwiMLBin:

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Dial answerOnBridge="true">
    <Sip>
      {{To}}@hcs.sip.twilio.com
    </Sip>
  </Dial>
</Response>

Then in Programmable SIP Domains I have setup the SIP URI

hcs.sip.twilio.com

I have also set: Voice Authentication with a credential list of username and password.

Call Control Configuration: A Call Comes in WebHook to http://demo.twilio.com/welcome/voice HTTP GET

SIP Registration: Enabled Credential lists: HCS Usr

Then in the phone I have the following settings. Excuse the imgs. Note the myusrid, I actually use an idea, I replaced it just for security reasons.

When I dial the number it says the number has been disconnected. Any idea what I'm doing wrong?

Answer 1

Make sure your SIP Username (username in credential list) is in E.164 format. So + and then country code. Register using this username.

For example:

+13055551212

Also, check the Debugger in console, to see the errors.