SIP SIP Paging Gateway• 1 port short circle input: Logic in/out, sensor detection• 1 port relay output: EM lock, alarm sensor, parking barrier• Support 30W amplifier, Support remote alarm• HD Audio/Video Linkage, Dual SIP line, Dual SIP servers• Distinguish between broadcast and intercom speaker• Supports external Onvif camera, speaker, speed dial keys, warning light,wiegand reader, USB pendrive, SD card, electro magnetic door locks,• Supports audio & video recording, dual local storage for audio & video, real-time storage available display, call trigger alarm, I/O input, DTMF control PTZ,and HD audio/video intercom• Metal housing, stability & Reliability• Dual Ethernet interface RJ45 port, POE,