Symptom
You hear your echo in head- set earpiece when you speak into microphone of headset.
You hear annoying noise of vehicles outside.
The TALK indicator and PAGE indicator are blinking after startup, and communication cannot be performed at all.
The TALK indicator and PAGE indicator are blinking after startup, but communication can be performed.
Cause/solution
Outside speaker and microphone may not be properly installed.
•Be sure speaker and microphone are isolated from each other, and tightly mounted with enough foam packed around each of them to absorb vibrations.
Outbound and/or inbound audio level may be set too high.
•Set outbound audio level just high enough to be heard by customers. Lower inbound audio to comfortable level.
Note: Lower inbound audio setting may also prevent feedback noise.
Echo canceller may be OFF or Effect level may be "LOW".
•Set echo canceller level properly.
Note: Default setting is "MAX"(LED:RED))
DNR may be OFF or Effect level may be "LOW".
• Set DNR level properly.
Note: Default setting is "MID"(LED:YELLOW))
The Center Module may fail to start up.
• Turn off the power and on the power again.
The
•Check to see whether the power of the other Center Module is set to ON.
•Check to see whether the Center Modules are correctly con- nected.
•Check to see whether LANE A and LANE B are selected for the lanes, respectively.
Reference
pages
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9
9, 24
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