[1] It was initially developed by Pingtel Corporation in 2003 as a voice over IP telephony server located in Boston, MA.

Since its extension, sipXecs now acts as a software implementation of the Session Initiation Protocol (SIP), making it a full IP-based communications system.

SipXecs competitors include other open-source telephony and SoftSwitch solutions such as Asterisk,[3] FreeSWITCH,[4] and the SIP Express Router.

SipXecs uses MongoDB as a distributed and partition tolerant database for global transactions, includes CFEngine for orchestration of clusters and JasperReports for reporting.

sipXecs includes FreeSWITCH as its media server and Openfire for presence and instant messaging services.

SipXecs follows standards such as Session Initiation Protocol (SIP), SRTP, Extensible Messaging and Presence Protocol (XMPP), SIP and XMPP over TLS, and several Web standards including WebRTC, WebSOCKET and Representational State Transfer (REST).

OnRelay, a company in the UK, selected sipXecs for its fixed-mobile convergence solution sold to carriers.

SIPfoundry lists the following users on its Web site:[19] Brevard County FL, Dutch Police, Easter Seals, Siemens Transportation, British Airways.