Mpd/Prs Signal - Samsung OfficeServ 7000 Series Programming Manual

CHAPTER 2. MMC Programming

[414] MPD/PRS SIGNAL

Used on a per-trunk basis to define if a Trunk line is to be either a Metering Pulse
Detection (MPD) or a Polarity Reversal Signal (PRS) trunk.
An MPD Trunk will detect a C.O-provided meter pulse. A Polarity Reversal trunk will
detect the line reversal signal which may be provided by the Trunk Line when the other
party answers the outgoing call or the outside party clears the call.
Type
PRS 1 When first PRS is detected, call duration timer is started. When second PRS is
detected, 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 is
detected, 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, call
duration timer is stopped and call is released.
MPD Metering Pulse Detection.
CONDITIONS

If the trunk is designated as PRS, the call duration timer will be started and the results
printed on the SMDR (Station Message Detail Recording) record.

PRS is also essential for dropping a trunk-to- trunk conversation which is
unsupervised by an internal party.
DEFAULT DATA
NONE (NORMAL)
2-132
Description
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