Avaya Communication Manager Administrator's Manual page 1608

Screen Reference
PPM
For CO, DIOD, FX, PCOL, and WATS trunks. This field appears when the Direction field is
outgoing or two-way.
Valid entries
y/n
PPS
Valid entries
10
20
Note:
The TN439, TN458, TN497, TN747Bv12 (or later), and TN767 circuit packs only
Note:
send rotary pulses at 10 pps.
Field descriptions for ATMS Thresholds page
This screen appears when the Direction field on page 1 is outgoing or two-way and the
ATMS field is y on the Feature-Related System Parameters screen.
The figure below shows a common configuration for the ATMS Thresholds page of the Trunk
Group screen. This screen is only an example, and the fields shown below may change or
disappear according to specific field settings.
1608 Administrator Guide for Avaya Communication Manager
Usage
Enter y if Periodical Pulse Metering (PPM) pulses
should be collected from the public network to
determine call cost. If this field is y, the Frequency field
appears.
Usage
Enter the rate (pulses per second) at which outgoing
rotary pulses are sent over this trunk group.