Competition
Competitors to Lync Server include:
- 3CX Phone System; 3CX Phone System for Windows is a software-based IP PBX
- Alceo's BCS Communicator
- Asterisk (PBX) Platform - SIP, ISDN, IAX, SMS, open source telephone system
- AT&T UC and SIP Services
- Avaya Aura (tm) Presence Services (with Messaging) and one-X software
- Bopup Communication Server; Based on private and secure IM protocol
- Cisco's Unified Presence Server and Unified Personal Communicator
- ejabberd
- Elastix; Elastix PBX, VoIP email, IM, faxing and collaboration functionality
- eZuce openUC Enterprise
- IBM's Lotus Sametime
- iChat Server (see Mac OS X Server)
- Jabber XCP (from Jabber, Inc., not to be confused with the IETF open standard XMPP)
- NEC's UCB and UCE
- Openfire
- ShoreTel
- Siemens' OpenScape
- sipXecs
- Sun Java System Instant Messaging (see Sun Java Communications Suite)
- Tigase
In instant messaging, the free public instant messaging networks (Google, Live Messenger, Yahoo and AOL) are widely used and represent a degree of competition. There have been attempts by other vendors at providing solutions such as Yahoo!'s Enterprise Instant Messenger; however these attempts have been largely unsuccessful. An ICQ corporate client and server option once existed, but it is no longer supported or developed.
Products such as Cisco Unified Presence Server (Version 6.0.2+) support federation with Microsoft Office Communication Server 2007 to provide presence of Cisco IP phones and remote call control of the IP phone from the Microsoft Office Communicator client.
The Siemens OpenScape solution offers a federation with the Office communicator, and also an integration into the office communicator, allowing to use the standard functionalities of the office communication suite together with the SIP based voice functionalities of the Siemens platform.
The Asterisk telephone platform supports SIP, IAX, and ISDN connections. Most telephones that support these protocols may be used with Asterisk, including software phone clients.
Read more about this topic: Microsoft Lync Server
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