Estimating Ccs Per Terminal; Comparative Method - Meridian Nortel 1 Option 11C Technical Reference Manual

Estimating CCS per terminal

Comparative method

Table 17
Example of station, trunk, and intra CCS/T averaging
Customer A
Line size 200
Line CCS/T 4.35
Trunk CCS/T 2.60
Intra CCS/T 1.70
Estimate the station and trunk CCS per terminal (CCS/T) for the installation
of a system using any one of the following methods:
• comparative method
• manual calculation
• default method
Select three existing systems which have a record of traffic study data. The
criteria for choosing comparative systems are:
• similar line size (+ 25 percent)
• similar business (such as bank, hospital, insurance, manufacturing)
• similar locality (urban or rural)
Once similar systems have been selected, their station, trunk, and intra CCS/
T are averaged. The averages are then applied to calculate trunk requirements
for the system being provisioned (see the example in Table 17).
Customer B
250
4.75
3.0
1.75
Customer C
150
3.50
2.0
1.50
Option 11C and 11C Mini
Provisioning Page 93 of 544
Total Average
600 200
12.60 4.20
7.60 2.50
4.95 1.65
Technical Reference Guide