Blink Cocoa

h1. Microsoft Lync replacement checklist

h2. Background

AG Projects was closely involved since 2005 with menthor-ship, authoring of specifications and developing of software components in the public domain for the deliverables of SIP SIMPLE and STOX IETF working groups. The software components implement SIP applications beyond VoIP that complement existing SIP deployments so that they can compete with feature-rich commercial offerings, traditionally available only from closed vendors like Apple, Google and Microsoft. These offerings typically provide a rich multimedia communication experience with audio, presence, chat, file transfer, screen sharing, video and multimedia conferencing for all media.  

h2. Goal

A pure SIP end-product with rich multimedia capabilities will compete in terms of features but a lower cost with Skype and Google Hangouts for residential customers and Microsoft Lync for corporate customers.

h2. Client Side (Blink)

|_. Component|_. Mac OSX |_. Windows |_. Linux|_. Description |

| Presence| Yes | Yes | Yes | SIMPLE RLS|

| Contact List | Yes | Yes | Yes | XCAP protocol|

| Audio|  Yes | Yes | Yes | Opus codec |

| Chat | Yes | Yes | Yes | MSRP protocol|

| File Transfer | Yes | Yes | Yes | MSRP protocol |

| Multiparty Conferencing | Yes | Yes | Yes | RTP and MSRP|

| NAT Traversal  | Yes | Yes | Yes | ICE & MSRP Relay |

| Screen sharing | Yes | UD | UD | VNC protocol |

| Video | Yes   | UD  | UD  | H.264 codec|

| Multi-language | Yes  | No | No | N/A|

* N/A = not applicable

* UD = under development

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

h2. Server Side (SylkServer)

|_. Component|_. Linux |_. Description |

| Multiparty Audio Conferencing| Yes | RTP mixer|

| Multiparty Chat Conferencing| Yes | MSRP Switch|

| Multiparty File Transfer | Yes | MSRP|

| Multiparty Video Conferencing | No | Colibri|

| Conference Participants | Yes | RFC4575|  

| XMPP gateway | Yes | "IETF STOX":http://datatracker.ietf.org/wg/stox/|

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

Presence Agent (RLS) is provided by OpenSIPS, MSRP NAT traversal by MSRPRelay and Contact List by OpenXCAP. Ideally, these components should be integrated in SylkServer in case the solution should be deployed at customer premisses.