Yeastar P550 IP Pbx System

Nfc tag tap nfc-capable mobile phone's back against yeastar logo to quickly configure network settings. system indicator indicate the system status. blinking: the system is working properly. static/off: the system goes wrong. 3 power indicator indicate the power status. 4 wan port for connection to wide area network (wan). lan port for connection to local area network (lan). usb slot insert a usb flash drive to store voicemails, logs, or recording files. 1-8 led (rj11 port status) indicate the ports' status. fxs: green: static: the analog phone or fax machine is idle. green: blinking: the analog phone or fax machine is busy. gsm/3g/4g lte: red: static: the gsm/3g/4g lte trunk is idle. red: blinking slowly: no sim card. red: blinking rapidly: the gsm/3g/4g lte trunk is in use. bri: