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HomeATIS/SIP Forum NNI Task ForceSession Initiation Protocol (SIP) Resource-Priority Header (RPH) and Priority Header Signing in Support of Emergency Calling (ATIS-1000098)

Session Initiation Protocol (SIP) Resource-Priority Header (RPH) and Priority Header Signing in Support of Emergency Calling (ATIS-1000098)

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  • Create Date October 28, 2021
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Session Initiation Protocol (SIP) Resource-Priority Header (RPH) and Priority Header Signing in Support of Emergency Calling (ATIS-1000098)

This standard defines how the IETF Personal Assertion Token (PASSporT) Extension for Resource-Priority
Authorization [IETF RFC 8443, PASSporT Extension for Resource-Priority Authorization], with the extensions
defined in RFC 9027, Assertion Values for Resource Priority Header and SIP Priority Header Claims in Support of
Emergency Services Networks, and the associated STIR mechanisms, are used to sign the Session Initiation
Protocol (SIP) Resource-Priority Header (RPH) field and convey assertions of Resource-Priority associated with an
emergency call or callback call. This standard also addresses the signing of the SIP Priority header field associated
with callback calls. Specifically, this standard describes a procedure for providing cryptographic authentication and
verification of the information in the SIP RPH field and SIP Priority header field in Internet Protocol (IP)-based
service provider communication networks in support of emergency calling. Published July 12. 2021.