Incoming calls fail

[alexatlevel]

Followed all instructions - outgoing calls work fine. Incoming calls (using ngrok) result in this error: 12100 - Document parse failure Undefined variable $_SESSION on line 15 of voice.php
Tried adding session_start(); to the top of voice.php
Then get 12100 - Document parse failure Undefined array key "identity" on line 16 of voice.php

Any tips? On the main page, I see a random name generated at "Your client name: XxxYyyZzz"

[ibnsultan]

When an access token is created in token.php, it registers the identity and stores it in the session. This identity is also added to Twilio, so when Twilio sends an incoming call, it expects to encounter an authorized identity in the TwiML handler.

The issue arises because when Twilio sends a request to your TwiML URL, it uses a different user agent, which means a different session ID is generated (with another identity created in random.php).

To resolve this, unless you have a mechanism to dynamically filter and select these identities, replace $_SESSION['identity'] with a static value in both token.php and voice.php, such as support_agent.