Glossary

MSRP stands for Message Session Relay Protocol and is defined by IETF in RFC4975 and RFC 4976. MSRP is open text-based protocol which allows transmission of the media content of various size in the instant messaging scenarios via established session. MSRP can be used for text and file/image transfer in Presence and Instance Message applications. MSRP sessions are established via SIP and SDP negotiation in the same manner as it is done for any other types of media.

Main elements of MSRP include:

• Session-based operations
• Message-based operations
• Boundary-based message framing and chunking