Pub. 42004-520A
NEMA 4X VoIP Telephones
Page 10 of 15
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Figure 7. VoIP Carrier PCBA Component Location
Attach the Front Cover
After all wiring and cable connections have been completed, place the front panel on the rear enclosure,
being careful not to pinch any cables. Secure the front panel using the four screws and washers provided.
Torque the screws to 10–12 lb
in (1.13–1.36 Nm).
External Controls
Handset Receiver Volume Control
A push-button switch is provided on the front panel for adjustment of the handset receiver volume. When
pressed, it decreases the volume gain from 20 dB to 12 dB, to 0 dB, and back up to 20 dB of the original
signal. After the end of each call the signal level is automatically set to 20 dB.
Maximum (Handset Receiver) Level Remote Control
The receiver volume level can be controlled remotely by changing the setting in the configuration file.
Refer to the “Handset Volume Setting” in the “Audio Settings” section of Pub. 42004-481, “VoIP
Telephone Configuration Guide” for programming instructions.
