Avaya 9400 series - Page 28

Troubleshooting Guidelines
28 Avaya 9400 Series Digital Deskphones Installation and Maintenance Guide
The telephone works, but the
audio quality is poor, specifically:
the user hears echo
when speaking on a
handset.
CAUSE: Echo from digital-to-analog conversion
on your Avaya media server trunk.
RESOLUTION: Verify which trunk is causing the
echo, and swap the trunk’s Trunk Termination
parameter on the call server.
the user hears echo
on a headset, but not
on a handset.
CAUSE: Improper headset adapter.
RESOLUTION: Replace adapter with Avaya’s
M12LU or 3412-HIC adapters. We recommend
the M12LU, since it supports Automatic Gain
Control.
the user is on Speaker
and hears no echo,
but the far-end hears
echo.
CAUSE: Room acoustics.
RESOLUTION: Ensure that there are six inches
or so of blank space to the right of the
telephone. If that is insufficient, use the handset.
the user hears
fluctuations in the
volume level which
are worse when the
Speaker is on, or at
the beginning of a call,
or when a call goes
from no one talking
abruptly to a loud
voice.
CAUSE: The user has changed the Automatic
Gain Control (AGC) or environmental acoustics
are not consistent with the current audio
settings.
RESOLUTION: Try different on/off settings for
the AGC and audio parameters.
The telephone works properly except for the
Speaker.
CAUSE: The Speaker was turned off at the call
server.
RESOLUTION: Administer the call server to
allow that station’s Speaker to operate. If that
does not work, do a self-test on the telephone,
as explained in the user guide.
Hands-Free Answer (HFA) is administered
but the telephone did not automatically
answer a call.
CAUSE: HFA only works if the telephone is idle.
A second call is ignored if it comes in while a call
is in progress, including ringing before the first
call is answered.
RESOLUTION: None.
The files are not uploading from the TFTP
server.
CAUSE: The TFTP server is stopped, or it is not
configured correctly.
RESOLUTION: Use the ch tftp-server
command to select another CLAN.
Table 1: Operational Error Conditions for 9400 Series Digital Deskphones (continued)
Condition Cause/Resolution
2 of 2