VoIP Door Phone System with Digital Door Lock System RFID Card

Q520 SIP Video Door Phone       The design of Q520 SIP Video Door Phone is based on experience and knowledge of VoIP phone development.Voice transmission uses standard IP/RTP protocol and video transmission adopts RTSP.Q520 have a variety of enterprise-level features and it is compatible with lots of major platforms,such as 3CX,Asterisk,Broadsoft,Elastix,etc.        The Q520 SIP Video Door Phone is designed for operation in indoor conditions.The robust mechanical construction offers protective coverage rating against dust and water(IP65).        The Q520 is economical devices with triple function(All in one)-Access control by call,code,indoor switch and RFID card.   HighligtsSmall and exquisite,easy to installGraphical Status lightsComfortable keyboard feel,soft backlightAll-in-One(Access Control,Intercom and Broadcasting)Compatible with standard SIP(RFC3261) protocol and main IPPBX/IMS platformAccess by call,code,indoor switch and RFID cardBuild-in 3W speaker and AEC,support high quality hand-free communication system online maintenance and management  /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1