@misc{rfc8262, series = {Request for Comments}, number = 8262, howpublished = {RFC 8262}, publisher = {RFC Editor}, doi = {10.17487/RFC8262}, url = {https://www.rfc-editor.org/info/rfc8262}, author = {Christer Holmberg and Ivo Sedlacek}, title = {{Content-ID Header Field in the Session Initiation Protocol (SIP)}}, pagetotal = 14, year = 2017, month = oct, abstract = {This document specifies the Content-ID header field for usage in the Session Initiation Protocol (SIP). This document also updates RFC 5621, which only allows a Content-ID URL to reference a body part that is part of a multipart message-body. This update enables a Content-ID URL to reference a complete message-body and metadata provided by some additional SIP header fields. This document updates RFC 5368 and RFC 6442 by clarifying their usage of the SIP Content-ID header field.}, }