Conferece Phones

• To minimize echoes, place the Conference Phone at the center of the room, or at least 20 inches (0.5m) away from any wall or vertical surface.
  It is important to place the Conference Phone on the surface where it will be used before applying power. When power is applied to the Conference Phone, it generates a series of self-test tones to automatically calibrate itself for the acoustic environment. Digital sound processing continuously adjusts the conference phone performance during a conversation, but its response depends on the acoustic environment detected when initially powered up.
  
  If you significantly change the acoustic environment (for example, by placing the Conference Phone in a different location), cycle the power (unplug the power adapter, then plug it in again). This allows the Conference Phone to adapt to the new surroundings and deliver optimal performance.
  
  Do not move the Conference Phone during a conversation.
  
• Use the Conference Phone in an environment as free as possible from background noise.
  
  Whenever possible, keep items that could cause noise or acoustic interference away from the Conference Phone and any external microphones (if used). Items that could compromise audio quality include plants, cups, and papers near the microphones.
  
  Have speakers direct their voices toward the Conference Phone or External Microphone (if used).
  
• Speak at normal conversational volume.
  
• To obtain best audio quality, adjust the microphone setup for the room size and arrangement:
  • In a small, closed room without sound-absorbing walls, use the microphone selection switch to activate only one or two of the Conference Phone’s built-in microphones. See page 12 of the User’s Manual for instructions.
  • For large rooms and irregular layouts (such as L-, U-, and T-shaped conference tables), connect external microphones. See the Voice Center Accessories page for additional information.