
CSQI, CSQO, and call register settings D-3
Set the number of call registers
Standard 1.0 Modular Option EC Installation and Maintenance Guide November 1999
Set the number of call registers
Introduction
Use the following calculations to determine the value for the
number of call registers (NCR), and adjust the NCR to that
value. These calculations must be performed before CSQI and
CSQO are set. Also perform these calculations when changes to
the values in the formula occur, that is, lines, trunks, ACD ports,
and so on. Call registers are always site-specific. Do not assume
that the correct setting for any one site will work at another
apparently similar site.
Do not change CSQI or CSQO unless you calculate the required
NCR with the following formulas. It must be noted that the
system default values are minimal and set only high enough to
bring the system up at time of installation.
NCR formulas
There are two NCR formulas: one for loop traffic greater than
3000 centi-call seconds (CCS), and one for loop traffic less than
3000 CCS. The following NCR formula elements and the
formulas themselves, are taken from NTP 553-3001-149.
Assumptions
• The call register traffic factor = 1.865.
• The formula for calculating recommended NCRs depends
on the traffic load for the system.
• There are 28 CCS per ACD trunk.
CAUTION
Risk of harming the level of service
If you are not familiar with this procedure,
consult with an experienced Meridian 1 or
SL1 technician before proceeding. This
procedure will affect the level of service
on the Meridian 1 or SL1. Whether the
effect is positive or negative depends on a
thorough knowledge of X11 software.
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