How to interpret the M500 LEDs

• All enabled SIP accounts are registered; displayed on a Primary or Single cell base station
• ON for five seconds after the confirmation of system deregistration

• During deskset/handset registration, i.e. subscription mode
• Toggles with the power LED for negotiating or checking with provisioning server

• Ready to deregister deskset/handset
• Toggles with the Power LED for base station/deskset/handset firmware upgrade or configuration import in progress

At least one enabled SIP account is deregistered; displayed on a Primary or Single cell base station

Toggles red and green within the SIP LED for “Primary base” mode during base selection mode

All enabled SIP accounts are registered; displayed on a Secondary base station

At least one enabled SIP account is deregistered; displayed on a Secondary base station

• This base station is connected with deskset(s)/handset(s) and registered base stations (if any)
• ON for five seconds after the confirmation of system deregistration

• During deskset/handset registration, i.e. subscription mode
• This base station is connected with registered base station(s) (if any), but not connected with any registered deskset/handset at the moment

Ready to deregister deskset/handset

This base station is registered and connected with other base stations, but the M500 system has no record of deskset/handset

This base station cannot connected with other registered base station(s) in the same network, whether or not the base station is connected to deskset(s)/handset(s)

This base station cannot find the master base unit; or the master base unit is down

Toggles red and green within the LINK LED for "Secondary base” mode during base selection mode

This Base station is a standalone base unit that is not registered with any deskset/handset or base station