Perry Ismangil

Over the past decade Teluu have dual-licensed pjsip to over 300 licensees. Indemnity, legal negotiations, violations are some of the things we have to work with.

The proprietary license itself have evolved over the years, and also the way we approach licensing negotiations.

However even with all that questions still remains on dual licensing, for example software patents doesn't look like it's going away anytime soon.

Over the past decade Teluu have dual-licensed pjsip to over 300 licensees. Indemnity, legal negotiations, violations are some of the things we have to work with.

The proprietary license itself have evolved over the years, and also the way we approach licensing negotiations.

However even with all that questions still remains on dual licensing, for example software patents doesn't look like it's going away anytime soon.

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. It combines signaling protocol (SIP) with rich multimedia framework and NAT traversal functionality into high level API that is portable and suitable for almost any type of systems ranging from desktops, embedded systems, to mobile handsets.

Please note that this talk replaces one entitled "10 days, 500k users: how we built a realtime mobile social network in Africa" that was due to have been given by Simon Tennant, who has sent his apologies but is now unable to attend as he has fallen ill. We wish him a speedy recovery.