Clear-Com HME DX300ES - Manual (Page 29)

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Beltpac or all-in-one headset users can not hear or talk to base station operators who
are using headsets.
Be sure base station headsets are fully plugged into the base station headset connectors.
Be sure the appropriate SELECT lights are red (O, X or ALL) when base station operators are
talking.
Be sure everyone is talking or listening on the right channel (O, X or ALL).
Beltpac range is bad.
Be sure antennas are properly connected and tightened on base station.
Be sure base station is positioned where there are no physical obstructions blocking line-of-
sight from the base station to beltpacs or all-in-one headsets.
Beeping is heard in base station headset and SELECT lights are blinking.
Base station is operating on battery power and battery is low.
Not all beltpac buttons are working.
Button functions may have been changed to work in the desired operating mode
(See page 22).
There is interference from a cordless telephone.
A 2400MHz cordless telephone nearby may cause interference, which may be corrected by
doing the following:
Change frequencies on the phone.
Move the phone as far as possible from the base station.
Use another type phone.
(If your base station does not have a battery backup)
In the event of an electrical power outage — such as from lightning or a power generator
failure, if you experience problems with your DX300ES equipment after the power comes on
again, unplug the AC power supply from its electrical outlet and wait 15 seconds, then plug it
back in.