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 | | | | |

• Complete RFC and standards listed here http://icanblink.com/standards.phtml
• N/A = not applicable
• UD = under development

Server Side (SylkServer)¶

Component	Linux	Protocol
XMPP gateway	Yes	IETF STOX WG
Multiparty Chat	Yes	MSRP Switch
Multiparty Audio	Yes	RTP mixer
Multiparty File Transfer	Yes	MSRP
Multiparty Video		Colibri
Conference Participants	Yes	RFC4575

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