Panasonic KX-TD816 User Manual page 196

Station Features and Operation (DPT/SLT)
Helpful hints
• Use this unit in a quiet room for best performance.
• If the other party has difficulty hearing you, decrease the volume.
• If you and the other party speak at the same time, parts of your conversation will be lost. To
avoid this, speak alternately.
User Manual References
4.3.48 Full One-Touch Dialing [PT only]
196 User Manual