Skip to content
Skip to navigation
Skip to topbar
Twilio Logo
Twilio Docs
Search
Search
Messaging
Voice
Serverless
Flex
Studio
All docs...
SDKs
Help
Help
Search
Log in
Sign up
On this page
WARNING: 13220
Description
Possible Causes
Possible Solutions
On this page
WARNING: 13220
Description
Possible Causes
Possible Solutions
13220: Dial: Invalid ringTone value
Positive Feedback
Negative Feedback
WARNING: 13220
warning-13220 page anchor
Positive Feedback
Negative Feedback
PROGRAMMABLE VOICE
WARNING
Description
description page anchor
Positive Feedback
Negative Feedback
Dial: Invalid ringTone value
Possible Causes
possible-causes page anchor
Positive Feedback
Negative Feedback
Dial: Invalid ringTone value
Possible Solutions
possible-solutions page anchor
Positive Feedback
Negative Feedback
Provide valid ringTone value