User manual
  Manual Ver1.0 
                                                                                                                                          - 5 - 
2. Installation 
In addition to this document, your M505N should arrive with the following: 
•  One power adapter   
•  One Ethernet cable with RJ-45 connector 
•  One Telephone cable with RJ-11 connector 
•  Product Installation CD 
•  Installation Guide 
Front Panel 
The Front panel LED light indicates the status of the unit. (Left to Right) 
M505N
Label  Color  Function 
Power  Green 
On – Solid Green 
Off – The Modem is Off 
Red – Power on self test/ Device Malfunction (not 
bootable) and device malfunction 
Malfunction is any state which would prevent 
syncing or passing of data 
DSL  Green 
Green – DSL Good Sync 
Off  - Powered off 
Flashing Green -   DSL Attempting sync 
Internet  Green 
Solid Green – IP connected – no traffic passing 
Device has a public IP via either static/ DHCP/ 
or IPCP 
If PPP is used it has been authenticated 
If IP or PPPOE session is idle and dropped, 
light to remain green as long as ADSL is still 
present. Light to turn red if upon attempting 
new session it fails. 
Off – Modem Power Off.   
  LED Should remain off if modem is in bridged 
mode 
Ethernet 1-4  Green 
Off   - Power Off – or – No Device Detected on any LAN 
port 
Solid Green – Device connected including wake on LAN 
on any LAN port 
Flashing Green – LAN activity present   
Wireless  Green 
Green – Wireless is activated on modem 
Flashing Green – Wireless activity is present 
Off    - Modem off or no radio signal detected
WPS  Green 
Off   - WPS function not active 
Solid Green – Device   










