%% You should probably cite rfc4458 instead of this I-D. @techreport{jennings-sip-voicemail-uri-06, number = {draft-jennings-sip-voicemail-uri-06}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-jennings-sip-voicemail-uri/06/}, author = {Cullen Fluffy Jennings and John Elwell and Francois Audet}, title = {{Session Initiation Protocol (SIP) URIs for Applications such as Voicemail and Interactive Voice Response (IVR)}}, pagetotal = 21, year = 2006, month = jan, day = 13, abstract = {The Session Initiation Protocol (SIP) is often used to initiate connections to applications such as voicemail or interactive voice recognition systems. This specification describes a convention for forming SIP service URIs that request particular services based on redirecting targets from such applications. This memo provides information for the Internet community.}, }