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Adrian Georgescu, 06/08/2014 05:11 pm


Microsoft Lync replacement checklist

Complete multimedia experience (audio, video, presence, chat, file transfer, screen sharing) interoperable with foreign SIP and XMPP domains.

Client Side (Blink)

Component Mac OSX Windows Linux Protocol
Audio Yes Yes Yes RTP Opus codec
Presence Yes Yes Yes SIP SIMPLE RLS
Contact List Yes Yes Yes SIP SIMPLE XCAP
Chat Yes Yes Yes MSRP protocol
File Transfer Yes Yes Yes MSRP protocol
Multimedia Conferencing Yes Yes Yes RTP and MSRP
NAT Traversal Yes Yes Yes ICE & MSRP Relay
Screen sharing Yes UD UD VNC over MSRP
Video Yes UD UD RTP H.264 codec
Brand-able Yes Yes No N/A
Packaging DMG Installer .deb N/A
Multi-language Yes No No
  • N/A = not applicable
  • UD = under development

Complete RFC and standards listed here http://icanblink.com/standards.phtml

Server Side (SylkServer)

Component Linux Protocol
Multiparty Audio Yes RTP mixer
Multiparty Chat Yes MSRP Switch
Multiparty File Transfer Yes MSRP
Multiparty Video No Colibri
Conference Participants Yes RFC4575
XMPP gateway Yes IETF STOX

Complete RFC and standards listed here http://sylkserver.com/features.phtml

The Presence Agent (RLS server) is provided by OpenSIPS, MSRP nat traversal by MSRP Relay and contact list by OpenXCAP. Ideally, these two components should be integrated in the server side for deployment at customer premisses.

Lync-Replacement.png (111.1 kB) Adrian Georgescu, 06/09/2014 01:37 pm