Blog - LINE ENGINEERING

TAG ARCHIVES: VoIP

Buffer overflow in PJSIP, a VoIP open source library
Kim Youngsung2018-02-26
He's a security engineer at LINE. He enjoys looking for bugs and is highly interested in secure coding.
Hi all, I am Youngsung Kim (Facebook, Twitter) of the Application Security team at LINE and am in charge of evaluating security of LINE services. On this post, I'd like to share a vulnerability (CVE-2017-16872, AST-2017-009) of PJSIP, a VoIP open source library. PJSIP is a multimedia communication library based on the following standard protocols; SIP, SDP, RTP, STUN, TURN, and ICE. The Asterisk framework, widely used on IP-PBX and VoPI gateway has an SIP stack implemented based on PJSIP.
LINE Group Call - Conference calls with up to 200 people
Jungjun Park2017-02-21
I am in charge of VoIP server development at LINE.
Hello, my name is Park Jungjun and I am currently developing the LINE Group Call feature. One of LINE's goals in development is Closing the Distance. To make this come true, LINE develops many different conversation services. On this LINE Engineering Blog post, I would like to introduce you to the features and technologies of one of our conversation services, LINE Group Call. LINE Group Call - Make voice calls with up to 200 people simultaneously LINE Group Call lets users have conference calls
- VoIP

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