RFC 8946: Personal Assertion Token (PASSporT) Extension for Diverted Calls

Publisher

IETF / RFC Editor

URL

https://www.rfc-editor.org/rfc/rfc8946.html

Published

2021-02-01

Updated

unknown

Accessed

2026-10-02

HTTP status

200

License

IETF Trust Legal Provisions; short excerpts with attribution

Source notes citing this source

• An RFC 8946 retargeting entity must not remove the original Identity header when it adds a div PASSporT, so both travel together. in context
• RFC 8946 (February 2021) defines a div PASSporT so that a retargeted call can show that the original called number no longer matches the new destination, distinguishing legitimate forwarding from replayed tokens. in context
• In a 'div' PASSporT the original called-party identifier from the 'dest' object becomes the 'div' claim, and the original and div PASSporTs travel in separate Identity header fields. in context
• RFC 8946 defines a 'div' PASSporT that explicitly indicates a call has been retargeted (diverted) from the original called number, created by an authentication service at the retargeting entity. in context

Cite this source record

APA

WarmTransfer. (2021, February 1). RFC 8946: Personal Assertion Token (PASSporT) Extension for Diverted Calls. WarmTransfer. https://warmtransfer.net/knowledge/sources/rfc-8946-div-passport

BibTeX

@misc{warmtransfer-rfc-8946-div-passport,
  title  = {RFC 8946: Personal Assertion Token (PASSporT) Extension for Diverted Calls},
  author = {{WarmTransfer}},
  year   = {2021},
  url    = {https://warmtransfer.net/knowledge/sources/rfc-8946-div-passport},
  note   = {IETF / RFC Editor, accessed 2026-10-02}
}