Elastic SIP Trunking Symmetric RTP disabled by default for new trunks

What’s changing?

Starting 30th June, 2025, Twilio’s Elastic SIP Trunking Symmetric Real-Time Transport Protocol (RTP) functionality will be disabled by default when you create new SIP Trunks.

What does this mean for you?

• New Trunks: Any new SIP Trunks created after the effective date will have Symmetric RTP turned off by default under General Trunk settings.
  

• Existing Trunks: There is no impact to existing Trunks; your current symmetric RTP settings will remain unchanged. However, Twilio strongly recommends customers to start using secure trunking - TLS for SIP signalling and Secure RTP (SRTP) for media as a standard best practice.
  

• Optional Enabling: You may still enable Symmetric RTP via the Console if your network setup requires it. 

What action do you need to take?

• Review your current Trunk configurations and turn off symmetric RTP if your network does not require it. 

• Consider migrating to Secure Trunking (TLS + SRTP)

Need help or have questions?

Please refer to our Elastic SIP Trunking documentation or contact Twilio Support for guidance.