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sipXecs Enterprise Communications System

A complete IP PBX for today and tomorrow that is easy to use, fully featured and robust

sipXecs Enterprise Communications System (ECS) is a highly robust and scalable, enterprise-grade, and fully featured unified communications solution with integrated voicemail, unified messaging, presence, call center, multiple auto attendants, paging and intercom services and a powerful plug & play web-based configuration and management system. sipXecs is based entirely on the Session Initiation Protocol (SIP) standard and operates on standard Linux operating system. It interoperates with a large number of third party phones, PSTN/IP gateways and applications such as Microsoft Exchange 2007 without compromising ease of use.

sipXecs is a 2nd generation voice over IP (VoIP) open source system not built for geeks but enterprise users requiring easy to use, stable and scalable solutions for mission critical applications. Thousands of small and large enterprises rely on sipXecs for their communications needs ranging from 10 people offices with 4 analog trunk lines to companies such as Amazon.com with thousands of users.

sipXecs provides dramatic cost savings while delivering the system and trunk redundancy, interoperability, scalability and plug–and-play benefits that SMB customers expect. sipXecs is a unified communications solution based on a robust real-time architecture that grows with your business.
sipXecs is the first business-grade IP PBX built on standards based open source. It offers proven, robust functionality for thousands of seats on an optionally redundant system, and provides low-cost communications solutions for main and remote offices, home workers, and call centers.

sipXecs interoperates with TDM PBXs via Voice over IP (VoIP) gateways, enabling users to choose a phased-in approach to VoIP implementations. sipXecs relies on standards and utilizes proven Internet techniques and a distributed architecture to create a highly secure and available IP voice system.

Switching to sipXecs has proven to be the right choice for many enterprises already. Open source offers lowest total cost of ownership (TCO) and it does not lock you into a vendor specific and proprietary solution.

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Product Brief


sipXecs IP PBX Now Interoperable with Skype for SIP

Skype and SIPfoundry, has announced that sipXecs, its open source enterprise IP PBX unified communications (UC) solution, has now been certified as interoperable with Skype for SIP. This will enable many organizations running a sipXecs IP PBX solution to save money by directing their outbound calls to mobiles and landlines via Skype, while also enabling them to receive inbound calls from Skype users.


Amazon.com adopts sipX ECS (Enterprise Communications Server) for worldwide VoIP Deployment

sipX ECS is used by small and large enterprises ranging up to about 10,000 users. The largest publicly announced deployment is at Amazon.com using an installation serving over 6,000 users