the volume by 80%. To prevent this, disable
ComPriority before placing calls (See page 9).
How can I reduce static noise during cell
phone calls?
To reduce RF interference during phone calls,
keep cell phones at least 12 inches from the
Sierra controller and headset when making calls.
When ying what causes a warbling noise in
the ear cup?
If your ear is not entirely inside the cup, with a
tight seal, air can seep in and cause the ANR to
compensate for uneven internal cup pressure.
15
Where is my product serial number?
The serial number (a
small, white, bar-code
sticker with numbers)
can be found on the
headset underneath the
head pad. The head pad,
located on the inner
radius of the headband,
must be removed to
reveal the serial number.
Simply pinch the
cushioned part of the
head pad, pull down and it will snap out.
FAQs