INSTALLATION
VORTEX EF2211/EF2210 Reference Manual 8 Technical Support: 800.932.2774
input accepts 3.5 mm terminal block connectors.  See “Connector Pinouts” on 
page 52 for pinouts of the terminal block connectors.
• Connect S
PEAKER OUTPUT to loudspeaker or AMP OUTPUT to the room amplifier.
• If RS-232 remote control is desired, connect the RS-232 R
EMOTE CONTROL port 
of the EF2211/EF2210 to the remote control device, such as an RS-232 interface 
to a touch panel or a COM port on a personal computer.
• On the EF2211, connect the L
INE RJ11 jack to an analog telephone line.
• On the EF2211, connect the P
HONE RJ11 jack to an analog telephone set 
(optional).
• Connect the external power supply to the P
OWER SUPPLY INPUT jack of the 
EF2211/EF2210.
• Set the country code on the EF2211.  By default the phone interface will be dis-
abled 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 installa-
tion is changed.
D
EVICE
 ID
S
 
ON
 
THE
 EF B
US
When considering which Device IDs can be used for which Vortex device, decide 
how many devices have the ability to transmit on the W, X, Y, and Z busses, and how 
many have the ability to transmit on the P Bus.  The EF2210, for example can only 
transmit on the W, X, Y, and Z busses while the EF2211 can transmit on the W, X, Y, 
and Z busses as well as the P bus.  Up to 8 devices can transmit on the W, X, Y, and Z 
busses.  Similarly, up to 8 devices can transmit on the P bus.  Note that the EF2211 
counts as one of both types.  All devices that can transmit on the same bus output(s) 
must have unique device IDs.  If the device IDs of linked Vortex devices are the same, 
the front panel LCD screen will display “EFBus Error: Dev. ID Conflict”.
C
ONNECTING
 M
ULTIPLE
 V
ORTEX
 D
EVICES
Up to 8 echo cancellation Vortex devices in combination can be linked together at one 
time and up to 8 phone interface Vortex devices in combination can be linked together 
at one time (See Device IDs on the EF Bus above).  Keep in mind that there are units 
that are considered one of both types (such as the EF2241 or EF2211).  Each unit in 
the chain must have a unique Device ID.  Use the EF Bus to link multiple Vortex 
devices together.
The following steps should be followed to connect the EF Bus:
1. Set a unique Device ID for each Vortex device.  The Device IDs range from 00 to 
07.
2. Power off all units.
3. Connect the RS-232 remote control device to any Vortex device in the chain.
4. Connect the provided Cat-5 cable between the EF B
US OUT of the first device, 
and the EF B
US IN of the second device.
Note. 
The EF Bus must be connected so that the EF Bus In of one 
box is connected to the EF Bus Out of another.  Connecting 
the EF Bus In to another EF Bus In (or Out to Out) will not 
work.