Avaya B189 - Page 48

Condition Cause/Resolution
AND power to the
phone is normal, but
there is no dial tone.
The display might
show “System Busy.”
CAUSE: Loss of communication with the call
server.
RESOLUTION: Check LAN continuity from the
call server to the phone using ARP or trace-
route and from the phone to the call server.
Verify that LAN administration has not
changed for the Gatekeeper, TN 2302AP
boards, or the LAN equipment (routers,
servers, etc.) between the switch and the
phone.
Verify that telephone settings are not changed
locally using VIEW and ADDR information, as
described earlier in this guide. Verify that the
telephone volume is set high. Finally, conduct
a self-test.
AND the phone was
recently moved.
CAUSE: Loss of communication with the call
server.
RESOLUTION: As above, but verify whether
the phone is being routed to a different DHCP
server, or even a different call server switch. If
so, the new server or switch might need to be
administered to support the phone.
AND the network was
recently changed to
upgrade or replace
servers, re-
administer the Avaya
Media Server, add or
change NAT, etc.
CAUSE: Loss of communication with the call
server.
RESOLUTION: As above.
The phone works properly, but you cannot
hear incoming DTMF tones.
CAUSE: The TN2302AP board does not pass
in-band DTMF tones.
RESOLUTION: None; the board is operating
as designed.
The phone works properly, but you cannot
hear incoming DTMF tones.
CAUSE: Call server suppresses sidetone
DTMF.
RESOLUTION: After completing call server
administration, enable On-Hook Dialing on the
Change-System-Parameters screen. If the
user has enabled Hands-Free Answer (HFA),
answers a call using the Speaker, switches to
the handset, and presses dialpad buttons, the
phone does not transmit DTMF tones. Disable
HFA to hear DTMF tones.
Hands-Free Answer (HFA) is administered
but the phone did not automatically answer
a call.
CAUSE: HFA only works if the phone is idle.
The phone ignores a second call if a call,
including the ringing tone is in progress.
Troubleshooting
48 Installing and maintaining Avaya B189 Conference IP Phone January 2014
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