Avaya 4600 Series Administrator's Manual page 62

4600 Series IP Telephone LAN Administrator's Guide
Table 5-1. Some Error Conditions in Operation of 4600 Series IP Telephones —Continued
Condition
The telephone stops
working in the middle of
a call,
The telephone had been
working, but does not
work now,
Error Conditions
5-2
AND Power to the
telephone is fine (and
the telephone may have
gone through the
restarting sequence).
AND no lights are lit on
the phone and the
display is not lit.
power to the telephone
is fine, but there is no
dialtone. (Display might
show "System Busy").
the telephone was
recently moved.
Cause/Resolution
CAUSE: DHCP Lease expired or DHCP
server not available when telephone
attempts to renegotiate DHCP lease.
RESOLUTION: Short-term, restart the
telephone.
Long-term, administer the DHCP
application to allow longer leases
("Infinite" or "Unlimited" is
recommended).
CAUSE: Loss of power.
RESOLUTION: Check the connections
between the telephone, the power
supply, and the power jack.
CAUSE: Loss of communication with the
DEFINITY switch
RESOLUTION: Check LAN continuity
from the DEFINITY to the telephone
(using ping or trace-route), and from the
telephone to the DEFINITY (by invoking
a feature button). Verify the LAN
administration has not changed for the
TN799 or TN 2302AP boards, or the
LAN equipment (routers, servers, etc.)
between the switch and the telephone.
Verify no one has locally changed the
telephone settings (by using the VIEW
and ADDR codes, as described in the
4600 Series IP Telephone Installation
Guide). Verify the volume on the
telephone is set high enough. Finally,
conduct a self-test.
CAUSE: Loss of communication with the
DEFINITY switch.
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 DEFINITY switch. If so, the new
server or switch may need to be
administered to support the telephone.