KX-UT136 Office Desk Phone · Certified for Asterisk and Broadsoft. · 24 feature keys · 3-way conference call · XML Application interface · 500 entry phonebook · 6 line backlit lcd display · Electric hook switch (plantronics) · 2 ethernet ports, poe · Green (low standby power consumption) SIP – Session Initiation Protocol sip is rapidly gaining popularity as the protocol of choice for setting up communications sessions across ip networks; it is a real enabling factor for unified communications. panasonic sip terminals can provide solid uc solutions with support for industry leading systems such as digium Asterisk and Broadsoft Broadworks. The panasonic range of sip telephony terminals enhances personal communications through excellent hd quality audio on every phone, combined with easy access to powerful supportive features and applications. The range - from standard phones, sip dect units, executive terminals and touch-screen smart desk application phones - addresses all requirements at a competitive price. Panasonic’s reputation for design, quality, reliability and care for the environment, ensure an exceptional user experience wherever the terminals are deployed - as part of a “cloud based” service or with an IP PBX - in a business environment or in the home.