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Cullen Fluffy Jennings
Pronouns: he/him

I help build collaboration systems used on the internet and strive to make simple trustable communications available to everyone. I am CTO of the Security and Collaboration groups at Cisco and I am involved with many internet standards, open source, startups, VoIP, and WebRTC projects. You can often find me kiteboarding or snowboarding.


Role Group Email
Liaison Member Nominating Committee 2022/2023 (nomcom2022)
Liaison Contact Real-Time Communication in WEB-browsers (rtcweb)
Member IETF-IANA (ietfiana)
Member Internet Architecture Board (iab)
Reviewer ART Area Review Team (artart)

External Resources

Name Value
GitHub Username

RFCs (27)

RFC Date Title Cited by
RFC 3325 Dec 2002 Private Extensions to the Session Initiation Protocol (SIP) for Asserted Identity within Trusted Networks 50 RFCs
RFC 4458 Apr 2006 Session Initiation Protocol (SIP) URIs for Applications such as Voicemail and Interactive Voice Response (IVR) 8 RFCs
RFC 4474 Aug 2006 Enhancements for Authenticated Identity Management in the Session Initiation Protocol (SIP) 55 RFCs
RFC 4770 Jan 2007 vCard Extensions for Instant Messaging (IM) 1 RFC
RFC 4787 Jan 2007 Network Address Translation (NAT) Behavioral Requirements for Unicast UDP 73 RFCs
RFC 4904 Jun 2007 Representing Trunk Groups in tel/sip Uniform Resource Identifiers (URIs) 2 RFCs
RFC 4975 Sep 2007 The Message Session Relay Protocol (MSRP) 33 RFCs
RFC 4976 Sep 2007 Relay Extensions for the Message Sessions Relay Protocol (MSRP) 12 RFCs
RFC 5039 Jan 2008 The Session Initiation Protocol (SIP) and Spam 6 RFCs
RFC 5341 Sep 2008 The Internet Assigned Number Authority (IANA) tel Uniform Resource Identifier (URI) Parameter Registry 1 RFC
RFC 5626 Oct 2009 Managing Client-Initiated Connections in the Session Initiation Protocol (SIP) 29 RFCs
RFC 5727 Mar 2010 Change Process for the Session Initiation Protocol (SIP) and the Real-time Applications and Infrastructure Area 11 RFCs
RFC 6072 Feb 2011 Certificate Management Service for the Session Initiation Protocol (SIP) 1 RFC
RFC 6216 Apr 2011 Example Call Flows Using Session Initiation Protocol (SIP) Security Mechanisms
RFC 6940 Jan 2014 REsource LOcation And Discovery (RELOAD) Base Protocol 11 RFCs
RFC 7624 Aug 2015 Confidentiality in the Face of Pervasive Surveillance: A Threat Model and Problem Statement 13 RFCs
RFC 7904 Oct 2016 A SIP Usage for REsource LOcation And Discovery (RELOAD) 2 RFCs
RFC 8224 Feb 2018 Authenticated Identity Management in the Session Initiation Protocol (SIP) 19 RFCs
RFC 8428 Aug 2018 Sensor Measurement Lists (SenML) 10 RFCs
RFC 8723 Apr 2020 Double Encryption Procedures for the Secure Real-Time Transport Protocol (SRTP) 5 RFCs
RFC 8829 Jan 2021 JavaScript Session Establishment Protocol (JSEP) 7 RFCs
RFC 8837 Jan 2021 Differentiated Services Code Point (DSCP) Packet Markings for WebRTC QoS 10 RFCs
RFC 8843 Jan 2021 Negotiating Media Multiplexing Using the Session Description Protocol (SDP) 28 RFCs
RFC 8870 Jan 2021 Encrypted Key Transport for DTLS and Secure RTP 3 RFCs
RFC 9039 Jun 2021 Uniform Resource Names for Device Identifiers 1 RFC
RFC 9143 Feb 2022 Negotiating Media Multiplexing Using the Session Description Protocol (SDP) 1 RFC
RFC 9335 Jan 2023 Completely Encrypting RTP Header Extensions and Contributing Sources

Active Internet-Drafts (2)

Expired Internet-Drafts (121)

(Excluding replaced Internet-Drafts.)

Internet-Draft Activity