Installation guide

MyPBX U520 Installation Guide
http://www.yeastar.com 5/14
Figure 2-3 MyPBX U520 Rear Panel
LED
Indication
Status
Description
Power
Power status
On
The power is switched on
Off
The power is switched off
RUN
MyPBX status
Blinking
MyPBX is running properly
Not Blinking/Off
MyPBX goes wrong
1-16
FXO port status
Red light
The red light is blinking: the PSTN line hasn’t been
connected
the red and green lights are blinking alternately: there
is incoming call
The red and green light are blinking alternately and
rapidly: the call is connected and the trunk is in use.
GSM/
UMTS port
status
Red light
The red light is blinking: no SIM card inserted
The red and green lights are blinking alternately: there
is incoming call
The red and green lights are blinking alternately and
rapidly: the call is connected and the trunk is in use.
BRI port status
Orange light
Orange light: indicates the BRI port
The orange light is blinking: the BRI line is
disconnected
The orange light is on: the BRI line is connected or in
use
FXS port status
Green light
The green and red lights are blinking alternately: the
FXS port is ringing
The green and red lights are blinking alternately and
rapidly: the call is connected and the FXS port is in use
Ports
Description
RJ11 ports
FXO port (red light): For the connection of PSTN lines or FXS ports of traditional PBX.
MyPBX users could make or receive calls via FXO port.
FXS port (green light): For the connection of analog phones.
BRI port (orange light): For the connection of ISDN BRI lines. MyPBX users could make or
receive calls via BRI port.
Note: The sequence number of the ports corresponds to that of the Indicator lights in the
front panel. (I.e. the LED lights in the front indicate the connection status of the
corresponding ports at the back panel.)
Antenna ports
For the connection of GSM/UMTS Antenna.