D.
Call
: Each wired intercom port (2-Wire only) can be individually set to send and receive a CB2-
generated call signal to/from a connected wired intercom system. To do so, turn that port’s Call
function
ON
. Turning the Call function
OFF
only prevents the signal from entering or leaving the
BaseStation via the respective port. Call signals can still be generated and transmitted by entities
among wireless users. The default setting for Call is
OFF
. See
for more
information.
Figure 28
Intercom Type Options
E.
Mic Kill
: The Mic Kill function is not currently operational.
F.
Echo Cancellation (ECAN):
Echo Cancellation (ECAN) assists in reducing echo from 2-Wire
and 4-Wire intercom connections.
For 2-Wire ports, hardware connections need to be optimized with the null procedure to minimize
echo in the physical link so that the software can reduce any residual echo. ECAN is on by default
in 2-Wire (it is off by default in 4-Wire).
If a port is never utilized in a system, ECAN can be turned off to ensure that it cannot create
undesirable effects. This should not be necessary, though, and it is highly recommended that you
keep ECAN on at all times for 2-Wire connections. It is better to leave ECAN off for 4-Wire
connections unless it is necessary on a given port.
ECAN is disabled while the BaseStation's Auto Null menu screen is active to ensure that the
hardware is optimized for echo reduction.
Operation - 54
