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EF2241 BLOCK DIAGRAM
VORTEX EF2241 Reference Manual 50 Technical Support: 800.932.2774
EF2241 B
LOCK
D
IAGRAM
Figure 30. Inside the EF2241
Copyright (c) 2001, Polycom Inc. All Rights Reserved
Echo
Canceller
Noise
Canceller
R1, R2, Bus
A/D
Level
adjust
Mic/Line 2
+-
EN
Delay
+-
A/D
Level
adjust
Mic/Line 1
+-
EN
Delay
+-
A/D
Level
adjust
Mic/Line 3
+-
EN
Delay
+-
A/D
Level
adjust
Mic/Line 4
+-
EN
Delay
+-
A/D
Input A
+-
PEQ
Delay
+-
A/D
Level
adjust
Input B
+-
PEQ
Delay
+-
A/D
Level
adjust
Input C
+-
PEQ
Delay
+-
A/D
Level
adjust
Input D
+-
PEQ
Delay
+-
Output 1 Output 2 Output 3 Output 4 Output A Output B Output C Output D
RS-232
EF Bus
Control/Status
Level
adjust
Line
Line Line Line Line Line Line Line
Mic/Line
Phantom
Mic/Line
Phantom
Mic/Line
Phantom
Mic/Line
Phantom
Matrixing
D/A
Amplifier
Output
PEQ GateMute
Gated
Ungated
AGC
On OffOn OffOn Off
Parameters
A/D
Delay
Phone
Telephone
Line
TLP
+-
AMP
PEQ
Noise
Canceller
Call Prog
Detect
AGC
Parameters
On Off
LEC
PEQ
Mute
On Off
Parameters
Parameters
Parameters
TLP (Telephone Line Processing)
PEQ
PEQ
PEQ PEQ
PEQ PEQ PEQ PEQ PEQ
Tone
Gen.
EN (Echo Canceller, Noise Canceller)
D/A
D/A
D/A D/A
D/A D/A D/A D/A
D/A