The sipXecs IP PBX is an open source alternative to commercial private branch exchange (PBX) systems from vendors such as Avaya, Nortel, Cisco, Siemens, NEC and others. Vis-a-vis Asterisk sipXecs scales to larger installations, offers more unified communications features and is easier to use. The sipXecs IP PBX is a native SIP based solution that offers all the typical features expected from a PBX, including voicemail, unified messaging, auto-attendant, conferencing, presence and call center capabilities. The sipXecs IP PBX can be deployed on a single server for smaller installations or as a distributed and optionally redundant system for larger deployments. It's Web Services (SOA) based management and configuration system allows centralized management of a distributed system and offers plug & play configuration for all phones and gateways. The sipXecs IP PBX effort aims at providing a fully capable open source unified communications solution for the mid-enterprise market. The mid-enterprise market ranges from a few hundred users to several ten thousand users, typically located in different buildings, locations or countries. Amazon.com has been an early user of sipXecs worldwide. Currently (2009), Amazon.com uses sipXecs worldwide for over 6,000 employees. sipXecs, of course, can also be used for much smaller deployments. It's easy to setup and use. Optional HA-IP Edition

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• Call Center Server (ACD)
• User Self-Control (User Web Configuration Portal)
• Call Detail Records collection and reporting
• Presence Server Features
• Presence and IM Federation
• Personal Assistant IM Bot
• Conferencing Server
• MS Server 2000 / 2003 and Exchange 2007
• Analog Lines (FXS)
• Supported Softclients
• Integration with Zimbra mail
• SIP Trunking
• System Administration Features
• PSTN Trunking
• Auto Attendant Features
• Directory, Softkeys, Speed Dial
• Internet Calling
• Dial Plan
• System Application Services
• Superior Voice Quality
• Web Conferencing & Collaboration
• Fixed Mobile Convergence (FMC) Application
• Enterprise Instant Messaging (IM) and Presence
• E911 Emergency Response
• Core Calling Features (Telephony Features)
• SOA Architecture / Business Process Integration
• System Application Services
• User Management
• Group Paging Server
• SIP Implementation
• SIP Implementation
• Centrally Managed sipXecs Distributed System
• Installation and Upgrades
• Required Hardware
• sipXecs Managed Devices (experimental support)
• sipXecs Managed Devices (experimental support)
• sipXecs Managed Devices
• sipXecs Managed Devices
• sipXecs IP PBX SIP Trunking Performance
• High Availability
• Call Park Server
• Hunt Groups
• Personal Auto Attendant
• Unified Messaging (Voicemail)
• Plug & Play Device Management
• Security
• XMPP Compliance