Yeastar P550 Overview

Front panel

No.	Indicator,Button or Interface	Description
1	NFC Tag	Tap NFC-capable mobile phone's back against Yeastar logo to quickly configure network settings.
2	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).
5	LAN Port	For connection to Local Area Network (LAN).
6	USB Slot	Insert a USB flash drive to store voicemails, logs, or recording files.
7	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: Orange: static: The BRI line is connected or in use. Orange: blinking: The BRI line is disconnected. FXO: Red: static: The PSTN line is idle. Red: blinking slowly: No PSTN line is connected to the FXO port. Red: blinking rapidly: The PSTN line is busy.
8	1-8 port (RJ11 ports)	FXS port (green light): For the connection of analog phones or fax machines. BRI port (orange light): For the connection of ISDN BRI lines. FXO port (red light): For the connection of PSTN lines or FXS ports of traditional PBX.
9	Reset button	Press the button and hold for 10 seconds to restore to factory defaults.

No.	Indicator,Button or Interface	Description
1	Antenna Socket	Rotate the antenna into the Antenna Socket.
2	Power Switch	Press this button to switch on/off the device.
3	Power Inlet	Connect the supplied power supply to the port.
4	Protective Earth	Connect to the ground to reduce the risk of electrocution to the user or protect the PBX from bad effects of external noise in case of a lightning strike.