Chapter 2 Hardware
AX/DX/EX/PX Series User’s Guide
47
2.2.8 PX3321-T1
Figure 20 LED Indicators (PX3321-T1)
The following are the LED descriptions for your PX3321-T1.
Table 13 LED Descriptions (PX3321-T1)
LED COLOR STATUS DESCRIPTION
POWER Green On The Zyxel Device is receiving power and ready for use.
Blinking Slow The Zyxel Device is booting up.
Blinking Fast The Zyxel Device is trying to boot up but failed.
Off The Zyxel Device is not receiving power.
PON Green On The Zyxel Device is ready for PON connection.
Blinking The Zyxel Device is setting up a PON connection.
Off The Zyxel Device is not receiving an optical signal.
LOS Red On The PON transceiver is not receiving an optical signal.
Blinking The optical signal the PON transceiver receiving is too weak or too
strong.
Off The PON connection is ready.
INTERNET Green On The Zyxel Device has a WAN IP address (either static or assigned by a
DHCP server) and the Internet connection is up.
Blinking The Zyxel Device is sending or receiving Internet data.
Off The Zyxel Device’s WAN connection is down or in Bridge mode. You
can select modes on the Network Setting > Broadband > Modify
screen.
Red On The Zyxel Device attempted to obtain an WAN IP but failed. Possible
causes are no response from a DHCP server, no PPPoE response,
PPPoE authentication failed.
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