Use Cases and Requirements for SIP-Based Media Recording (SIPREC). - Ken Rehor; Leon Portman; Andrew Hutton; Rajnish Jain (RFC, 2011)

An Architecture for Media Recording Using the Session Initiation Protocol. - Andrew Hutton; Leon Portman; Rajnish Jain; Ken Rehor (RFC, 2014)

The ALPN HTTP Header Field. - Andrew Hutton; Justin Uberti; Martin Thomson (RFC, 2015)

Session Recording Protocol. - Leon Portman; Henry Lum; Charles Eckel; Alan B. Johnston; Andrew Hutton (RFC, 2016)

An Opportunistic Approach for Secure Real-time Transport Protocol (OSRTP). - Alan B. Johnston; Bernard Aboba; Andrew Hutton; Roland Jesske; Thomas Stach (RFC, 2019)

Location Source Parameter for the SIP Geolocation Header Field. - James Winterbottom; Roland Jesske; Bruno Chatras; Andrew Hutton (RFC, 2020)