Specifications

Chapter 2 - Installation Administration Manual (SIP/MGCP Version)
AT-VP504E FXS 19
Interpreting the
AT-VP504E FXS
LEDs
The AT-VP504E FXS has three (3) LED indicators located on the front
panel, which are identified as
Test , LAN , and Power . A LED has three
states: On, Off and Blinking.
Test LED The
Test LED indicates if a phone/fax connected to one of the Phone
ports is off hook or on hook.
LAN LED The
LAN LED provides the status of the network connected to the
Ethernet port. Normal operation is variable On-Off blinking.
Power LED The
Power LED is used to indicate whether the AT-VP504E FXS is
operational at its most basic level. It does not imply that the unit can be
used, only that it is capable of being used. Normal operation is steady
On.
Table 9: LAN LED Status
Operation LED Status Description
link_down Steady OFF
Ethernet port does not sense the carrier
signal.
link_up Steady ON Only valid for the first 4 seconds after
initial receipt of carrier signal.
link_active Variable
Blinking
It is on when data is transmitted or
received on the
Ethernet port. This
implies that the LINK_UP is also true.
Table 10: Power LED Status
Operation LED Status Description
normal Steady ON Power is on and the unit does not have
any major failure.
failed 3 HZ Blinking
at 50% ON
duty cycle
Failure of power-up diagnostics such
that the unit is unable to operate.
addr_fail 1 HZ Winking
at 75% ON
duty cycle
Failure of DHCP – no acceptable offer
received from DHCP.
no_power Steady OFF The unit has no power supply input.