1.5.4.5 Reverse CircuitDescriptionA circuit in the PBX can detect the reverse signal from the telephone company when an extension user triesto make a trunk call. This detects the start (a called party goes off-hook) and end (the called party goes on-hook)of an outgoing trunk call. When a trunk call is received, the circuit can also detect the reverse signal after anoutside caller goes on-hook.If Reverse Circuit Detection is disabled, the total duration of the call is not accurately recognised by the PBX.The duration of a call can be verified on SMDR using this feature (® 1.26.1.1 Station Message Detail Recording(SMDR)).It is possible to select whether the PBX detects the reverse signal for outgoing trunk calls only, or for bothoutgoing and incoming trunk calls, or for no trunk calls (detection disabled) through system programming.Conditions• This feature is not available for the following ELCOT/LCOT cards:KX-TDA6181AL (ELCOT16)KX-TDA0181AL (LCOT16)KX-TDA0180AL (LCOT8)PC Programming Manual References3.30 [1-1] Slot—Port Property - LCO Port— Reverse DetectionPT Programming Manual References[415] LCOT Reverse Circuit92 Feature Guide1.5.4 Trunk Call Features