Allied Telesis AT-AR020 PRI E1/T1 Hardware Reference Manual page 17

Hardware Reference
C613-03023-00 REV J
Table 10: AT-AR027 VoIP-FXS PIC LED functions
LED State
Off Hook/Ring Off
Green
Flashing
PIC Reg Off
Flashing
PIC Error
Off
Green
Function
The port is on-hook
The port is off-hook
An incoming call is present on the port
The PIC is not registered with a gatekeeper and
external phone calls cannot be made
The PIC is registered with a gatekeeper or
gatekeeper has been set to "None". External
calls can only be made if the PIC is registered
with a gatekeeper
The PIC is okay
An internal error has occurred. Reset the PIC
using the reset voip command
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