Polycom Vortex EF2241 Application Note

The shield of the cable is not connected.
OUTPUT OF IPOWER TO INPUT OF VORTEX DEVICE
Connect the Positive conductor of the Vortex device to the Tip of the RCA connector and the Negative
conductor of the Vortex device to Shield of the RCA connector.
The shield of the cable is not connected.
POWERMIC CABLE PINOUT
You can make your own PowerMic Interface Cable. You first need a 7-pin Mini DIN connector. Most
electronic supply houses should carry this connector. Once you've obtained the connector, connect the
Positive conductor from the Vortex device to Pin 7 of the DIN connector. Connect the Negative conductor
from the Vortex device to Pin 4 of the DIN connector. Do not connect the shield of the cable to the DIN
connector.
The PowerMic input is unbalanced in this configuration. We recommend keeping the
cable from the Vortex device as short as possible to avoid any common-mode signals that
may corrupt the audio.
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Polycom Vortex EF2241 Specifications

General

Brand	Polycom
Model	Vortex EF2241
Category	Telephone Accessories
Language	English