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Adrian Georgescu, 06/09/2014 12:57 am
Microsoft Lync replacement checklist¶
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. These software components ("http://sipsimpleclient.org":SIP SIMPLE Client SDK, "http://openxcap.org":OpenXCAP, "http://msrprelay.org":MSRPRelay and "http://sylkserver.com":SylkServer) 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.
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. AG Projects offers today these features beyond VoIP part of large scale deployments with its SIP Thor platform and as a hosted service at http://sip2sip.info service. This carrier-grade product is addressing the needs of large operators and is not properly positioned to address the particularities of corporate markets. This market required a different pricing model, smaller scale on-site deployments and integration with an existing PBX present on site (like Asterisk)
Goal¶
The goal of this project is to downscale SIP Thor platform features into a smaller deployable solution that can be installed in a zero-configuration style at customer premisses that address the needs of small to media enterprises from 10 to 500 seats.
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
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 |
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.
