Plantronics Pulsar 590 User Manual page 11

IN-FLIGHT AND WIRED USES
In-flight cable can be used with
any 3.5mm audio jack to convert
your wireless headset into wired
headphones. Headset will not
operate when in-flight cable is
connected and headset is
powered on.
1. Power headset off.
2. Insert in-flight cable into
3.5mm jack on left earpiece.
Note: Telescoping
voice tube and all
headset controls
are disabled when
in-flight cable is in
use. To control
volume, use the
device connected to
the in-flight cable,
not the headset.
10