Avaya one-X 9611G, Установка и обслуживание

Страница: 80 / 90

Troubleshooting guidelines
80 SIP Deskphones Release 6.4 Installation and Maintenance Guide
The deskphone 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 Communication Manager call server
trunk.
RESOLUTION:
Option 1 : Try a different Call Quality setting
under the Audio Parameters section.
Option 2 : Check whether packet loss, or jitter
delay is causing this problem, by eliminating or
minimizing both.
Option 3 : Verify which trunk is causing the echo,
and check 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
deskphone. If that is insufficient, use the
handset.
the user experiences
sudden silences such
as gaps in speech, or
static, clipped or
garbled speech, etc. CAUSE: Jitter, delay, dropped packets, etc.
RESOLUTION: You can have the user provide
diagnostic data by invoking the Network
Information feature under the
A (Avaya) button
on the deskphone. One or more Quality of
Service (QoS) features should be implemented
in the network as covered in
Chapter 3: Local
administrative options .
CAUSE: Improper non-Category 5 wiring.
RESOLUTION: Replace non-Category 5 wiring
with Category 5 wiring.
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 AGCHAND, AGCHEAD, and AGCSPKR
parameters.
Table 4: Operational error conditions for 9601, 9608, 9608G, 9611G, 9621G, or 9641G IP
deskphones (continued)
Condition Cause/Resolution
3 of 6