ATIS-1000078 National Security / Emergency Preparedness Priority Service Session Initiation Protocol Resource-Priority Header (SIP RPH) Signing and Verification using PASSporTs
Nov 30, 2023
Here you will find our repository of policies, reports, links and other important assets

ATIS Webinar “How SHAKEN works” explains the SHAKEN framework.
ATIS webinar regarding “Call Authentication for Non-IP Networks”
Page 1 of 2
TSPs registered with the CRTC to provide voice services in Canada may participate either as a Shareholder or a non-Shareholder Participant.
Submit your Certificate Practice Statement (CPS) today and start the process to becoming an authorized Certification Authority.

Whether you are a Canadian carrier interested in joining the CST-GA or simply would like to learn more, we want to hear from you.