Simplifying the Session Management using SIP Single Port

Ján Murányi, Ivan Kotuliak and Juraj Nemeček

SIP Management

• What is SIP-Based Session Management?– administration of firewalls– control of QoS– session control– service identification– session billing– session recording– location control– service assignment– security measures– customer service profiling

SIP Management - Drawbacks

• Random-fashion port selection

SIP Single Port – The solution

• Multiplexing of SIP, RTP, RTCP– Alternative detection scheme – not based on Transport

layer information– Multiplexing / Demultiplexing

• Extends RFC 5761– Multiplexing RTP Data and Control Packets on a Single

Port– This RFC brings the multiplexing of RTP and RTCP

SIP Single Port – The solution

• Between consecutive SIRUPs the stream is defined as one 5-tuple for all media streams and signalization

• SIRUP is proof of concept application for SIP Single Port

Solution description

• SIRUP– SIp Rtp mUltiplexing Proxy – SIRUP– Proof of concept application– Test-proof implementation

– Signalization is handeled in C++ application– Media are handeled directly in Linux-based kernel using

a custom iptalbles module

Proof of concept

• SIP Single Port is compatible with nowadays SIP– RFC 3261, RFC 4566, RFC 3605, RFC 3550– SIP Single Port worked with any UA we have available

• The performance of SIRUP is comparable to any session management tool

ResultsPerformance Test-beds

SIP Single Port

• SIP Single Port is the communication based on multiplexing SIP, RTP, RTCP

• SIRUP - the proof of concept application • The performance and the compatibility is solved• The SIP Single Port is suitable tool for SIP-

Based VoIP session management

Multimedia session management

• Architecture to that allows us to control multimedia sessions

• The idea is to control the multimedia sessions based on their needs

• The MPLS network is controlled from above• All criteria for measurement is bound to RTP

sessions– Jitter– Packet loss– Round Trip Time– Mean Opinion Score (MOS)

Multimedia session management

Multimedia session management

Thank you for your attentionJán Murányi, STU Bratislava

jan.muranyi@stuba.sk