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? Noise
+ Check if the circuit is broken. (Change the circuit)
Check if the connector is moist or rust (Change the connector)
? Ring once then disconnect when receive a call. Dialing function is available
+ Check if connector is in a moist environment.
Check if too many extensions are used together or the quality of extension is not good
enough (Change the bad extension)
? LCD become dim
+ Check if LCD contrast is properly set or battery is in low-battery state. (Adjust LCD contrast,
if the LCD is still dim, replace the battery.)
? No ring
+ Check if the RING is in the OFF state, reset it.
? Most of the functions failed
+ Check if the battery is in low-battery state. (Change the battery)
If battery is in normal state (Remove the battery, unplug the lines and reinstall after 10
minutes)
NOTE: Due to continuous product development all features and specifications are subject to
change without prior notice.
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