Rate this page:

Error 32209

ERROR - 32209

SIP: Secure transport required

When secure calling is enabled, Twilio cannot accept calls made using UDP or TCP. Please use TLS.

Possible Causes

  • Media security is enabled on your SIP domain or trunk, but Twilio received SIP traffic over an insecure protocol, such as UDP or TCP.
  • You are using SIP registration, and are attempting to place a secure call to an endpoint where all of the available bindings were registered with an insecure protocol, such as UDP or TCP.

Possible Solutions

  • Please ensure your PBX or end device is configured to send SIP traffic over the TLS transport.
  • If you are using SIP registration, your device must be configured to register over the TLS protocol. Devices registered over insecure protocols will not be attempted for secure calls.
Rate this page:

Thank you for your feedback!

Please select the reason(s) for your feedback. The additional information you provide helps us improve our documentation:

Sending your feedback...
🎉 Thank you for your feedback!
Something went wrong. Please try again.

Thanks for your feedback!

Refer us and get $10 in 3 simple steps!

Step 1

Get link

Get a free personal referral link here

Step 2

Give $10

Your user signs up and upgrade using link

Step 3

Get $10

1,250 free SMSes
OR 1,000 free voice mins
OR 12,000 chats
OR more