Polycom Vortex EF2210 Reference Manual

INTEGRATING THE UNIT INTO YOUR SYSTEM
VORTEX EF2211/EF2210 Reference Manual 16 Technical Support: 800.932.2774
Customize
Setting for Your
Particular
Application
The following sections will describe customizing parameters on the EF2211/EF2210
for your particular application if you are not using Preset 0.
S ET UP THE P HONE I NTERFACE (EF2211 O NLY )
The echo canceller reference of the EF2211 is by default set up with the phone input
already assigned to it.
By default the phone interface will be disabled until you select a country code for the
telephony interface. This can either be done with the front panel LCD menu, or the
RS-232 interface. The country code only needs to be selected the first time or when
the country of the installation is changed.
Send audio from the phone to the outputs on the same device by unmuting the cross-
point of Input T on that output. Send audio from the phone to other linked devices by
using the P bus output in the EF Bus. The linked devices can take the phone signal
off the bus from the P Bus input.
B UILD Y OUR E CHO C ANCELLER R EFERENCE
The acoustic echo canceller (AEC) reference should generally contain exactly the
same audio signals as what is coming out of your loudspeaker(s) minus any local
microphone(s) that might be used for sound reinforcement, since the signal output
from the loudspeaker is what is then picked up by the room’s microphones causing
acoustic echo. Note that this statement is a general statement. Conditions for this
being true follow:
If your system
does NOT have
sound
reinforcement,
• The AEC reference should contain exactly the same audio as the loudspeaker
output: all far end audio, audio from the phone add, program audio, etc.
• If you are using crosspoint gains in the loudspeaker mix, apply the same gains to
the signals in your reference.
If your system
has sound
reinforcement,
• Do NOT mix your room microphones into the reference, but include all other
audio (program audio, remote audio, phone audio, etc.).
an average level of 0 dB You’ve set the Input Gain
to a good level!
Table 1: How to set the Input Gain using the AGC meter on the Conference
Composer Diagnostics page.

Polycom Vortex EF2210 Specifications

General

Brand	Polycom
Model	Vortex EF2210
Category	Telephone Accessories
Language	English