Avaya 4600 Series Administrator's Manual page 135

Table 14: Some Error Conditions in Operation of 4600 Series IP Telephones (continued)
Condition
The telephone was
working, but does
not work now,
AND no lights are lit on
the telephone and the
display is not lit.
AND power to the
telephone is fine, but
there is no dial tone.
The display might show
"System Busy."
AND the telephone
was recently moved.
AND the network was
recently changed to
upgrade or replace
servers, re-administer
the Avaya Media
Server, add or change
NAT, etc.
Cause/Resolution
CAUSE: Loss of power.
RESOLUTION: Check the connections
between the telephone, the power supply, and
the power jack.
CAUSE: Loss of communication with the PBX
switch.
RESOLUTION: Check LAN continuity from the
PBX to the telephone using ARP or trace-route
and from the telephone to the PBX by invoking
a Feature button. Verify that LAN
administration has not changed for the
Gatekeeper, TN 2302AP circuit packs, or the
LAN equipment (routers, servers, etc.)
between the switch and the telephone. Verify
no one changed the telephone settings locally
using the VIEW and ADDR codes, as
described in the 4600 Series IP Telephone
Installation Guide. Verify the telephone volume
is set high enough. Finally, conduct a self-test.
CAUSE: Loss of communication with the PBX.
RESOLUTION: As above, but pay particular
attention to the possibility that the telephone is
being routed to a different DHCP server, or
even a different PBX switch. If so, the new
server or switch might need to be administered
to support the telephone.
CAUSE: Loss of communication with the PBX.
RESOLUTION: As above.
Error Conditions
2 of 6
Issue 8 July 2008 135