I'm trying to place outbound calls that will play a recorded message with Twilio. I have the following XML served as TwiML:
<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Say voice="alice">1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21</Say>
</Response>
When I call a regular landline, it works fine. However, if I call my Google Voice number, by the time I pick up, it's already reading "15, 16, ...". The GV number in question is not using Call Screening, and it's ringing to a single line (a T-Mobile cell phone).
Does Google Voice supervise (connect) the call while it's still ringing? Is this a problem with Twilio's pick-up detection?