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Adrian Georgescu, 06/09/2014 12:54 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. 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.

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.

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