CHAPTER 2. MMC Programming2-124 Samsung Business Communications111B[414] MPD/PRS SIGNALUsed on a per-trunk basis to define if a Trunk line is to be either a Metering PulseDetection(MPD) or a Polarity Reversal Signal(PRS) trunk.An MPD Trunk will detect a C.O-provided meter pulse. A Polarity Reversal trunk willdetect the line reversal signal which may be provided by the Trunk Line when the otherparty answers the outgoing call or the outside party clears the call.Type DescriptionPRS 1 When first PRS is detected, call duration timer is started. When second PRS isdetected, call duration timer is stopped. The call is not released.PRS 2 When first PRS is detected, call duration timer is started. When second PRS isdetected, call duration timer is stopped and the call is released.PRS 3 The call duration timer starts based on the timer. When first PRS is detected, callduration timer is stopped and call is released.MPD Metering Pulse Detection.547BCONDITIONSy If the trunk is designated as PRS, the call duration timer will be started and the resultsprinted on the SMDR record.y PRS is also essential for dropping a trunk-to- trunk conversation which is unsupervisedby an internal party.548BDEFAULT DATANONE(NORMAL)549BACTION DISPLAY1) Press Transfer button and enter 414.Display shows:[U7U01] TRK PRSNONE2) Dial desired trunk number.(e.g., 705)OR[705] TRK PRSUNUONEPress Volume button to select trunk and useRight Soft button to move cursor.
