Panasonic KX-TD500, Руководство по установке

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Utility
228 Installation Manual
[Card/Port Test] CO-Extension Path Test - Error Indication Table
Error Message Description
Loop current failure Loop current was not detected.
Bell detection failure Bell signal was not detected.
PB Generator failure PB Generator is not functioning properly.
Hook signal detection failure Hooking signal was not detected.
Dial pulse failure Dial Pulse signal was not detected.
Speech path failure (CO Extension) Speech path (CO Extension) is
abnormal.
Speech path failure (Extension CO) Speech path (Extension CO) is
abnormal.
PB receiver 1 failure PB Receiver 1 is not functioning properly.
PB receiver 2 failure PB Receiver 2 is not functioning properly.
PB receiver 3 failure PB Receiver 3 is not functioning properly.
PB receiver 4 failure PB Receiver 4 is not functioning properly.