Need help?Do you have a question about the DISCOVER D904 and is the answer not in the manual?
Instructions for connecting the headset base to a telephone with a dedicated headset port.
Steps to connect the headset base to a telephone lacking a dedicated headset port.
Guide on connecting a compatible handset lifter for automated call answering.
Procedure for connecting the headset base to a computer's USB port.
Details on attaching and adjusting the headband and earhook for comfortable wear.
Instructions on how to initiate and answer calls in telephone and VoIP modes.
Covers adjusting ringing, microphone mute, transmit and receive volumes.
Details on hot-swapping batteries and battery level indicators.
Guide to setting up three-way conference calls with additional headsets.
Instructions for registering a new headset and using the device for call recording.
Covers general precautions for product use, including child safety and electrical hazards.
Recommendations for preventing hearing damage from high volume sound levels.
Important safety notes regarding charging, battery handling, and disposal.
To Next Page
General