Toshiba DP5000 用户手册

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The Basics
Ring Tones
Strata CIX DP5000-series Telephone UG     11/07
17
Speakerphone/Microphone Sensitivity Adjustment
When you are using the speakerphone, high ambient noise levels may cause the party 
you are talking with to be to cut off frequently. If this happens, follow these steps to 
lower the sensitivity of the microphone on a DP5000-series telephone. The default is 
normal sensitivity. 
1. Press 
3
+
6
+
9
+
Hold
 (simultaneously).
2. Press 
0
.
3. Press Programmable Feature Button 3 (FB3) to toggle On/Off.
FB3, LED On: Lower sensitivity
FB3, LED Off: Normal sensitivity
4. Press 
Hold
 to set the option.
5. Go off-hook, then on-hook to exit the program mode.