Clear-Com CellCom Battery Pack Charger - Manual (Page 56)

Clear-Com Communication Systems
CellCom V2.0.3 Instruction Manual
4 - 8
TROUBLESHOOTING PARTY-LINE CONNECTIONS
Reducing CellCom Beltpack echo when talking to a
analogue party-line
If the basestation and beltpack are not set up correctly the CellCom
user will experience an echo when talking to a party-line (either directly
or via a group or a wireless party-line). The echo is caused by either
local audio coupling in the headset due to the microphone gain being
set too high or audio reflections from the party-line that can minimized
by setting a VOX gate on the party-line and the party-line being auto
nulled.
How to set the microphone gain in the beltpack
When using a CC-260 or CC-95 the microphone gain should be set at
55dB (55dB is the default setting).
Note: If the microphone gain is set higher than 55dB this can
introduce audio coupling between the ear phone and the
microphone.
Include the Party-Line channel inside a Wireless Party-Line
group
It is recommended that when connecting to an analogue party-line
system that the user includes the wireless party-lines (WPL). The
WPLs reduce the variation in audio levels heard when talking to
analogue party-lines. The WPLs are created in the configuration editor
in a similar way to a user creating a group.
How to set the VOX gating level on the Party-Line connected
to the Basestation
Figure 4-2: VOX Gating Level on Party Line Connection