Chapter 1 Introducing the Zyxel Device
VMG/XMG Series User’s Guide
42
WLAN/WPS Green On The 2.4 GHz or 5 GHz wireless network is activated.
Blinking The Zyxel Device is communicating with 2.4 GHz or 5 GHz wireless clients.
Orange Blinking The Zyxel Device is setting up a WPS connection with a 2.4 GHz or 5 GHz 
wireless client.
Off The 2.4 GHz or 5 GHz wireless network is not activated.
Phone1, 
Phone2
Green On A SIP account is registered for the phone port.
Blinking A telephone connected to the phone port has its receiver off the hook or 
there is an incoming call.
Orange On A SIP account is registered for the phone port and there is a voice message 
in the corresponding SIP account.
Blinking A telephone connected to the phone port has its receiver off the hook and 
there is a voice message in the corresponding SIP account.
Off The phone port does not have a SIP account registered.
USB Green On The Zyxel Device recognizes a USB connection through the USB slot.
Blinking The Zyxel Device is sending/receiving data to/from the USB device 
connected to it.
Off The Zyxel Device does not detect a USB connection through the USB slot.
Table 12   VMG8623-T50A LED Descriptions
LED COLOR STATUS DESCRIPTION
Power Blue On The Zyxel Device is receiving power and ready for use.
Blinking The Zyxel Device is self-testing.
Red On The Zyxel Device detected an error while self-testing, or there is a device 
malfunction.
Blinking The Zyxel Device is upgrading firmware.
Off The Zyxel Device is not receiving power.
WAN Blue On One of the following connections is up.
•ADSL
•VDSL
• Ethernet connection on the WAN.
Slow 
Blinking
The ADSL/VDSL link is down, and the Zyxel Device is looking for an ADSL/
VDSL link.
Fast 
Blinking
The Zyxel Device is initializing the ADSL/VDSL link.
Off There is no Ethernet connection on the WAN.
Internet Blue On Your device has a WAN IP address (either static or assigned by a DHCP 
server), PPP negotiation was successfully completed (if used) and the DSL 
connection is up.
Blinking The Zyxel Device is sending or receiving IP traffic.
Off There is no Internet connection or the gateway is in bridged mode.
Red On The Zyxel Device attempted to make an IP connection but failed. Possible 
causes are no response from a DHCP server, no PPPoE response, PPPoE 
authentication failed.
Table 11   VMG8924-B10D LED Descriptions (continued)
LED COLOR STATUS DESCRIPTION