Provisioning guidelines 3-5
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Step 2:
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Estimate
ccs
per terminal
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CCS per terminal
The station and trunk CCS per terminal
(CCS/r)
for an initial installation of
an SL- 1 can be estimated using any one of the following methods.
-
Comparative method
-
Manual calculation
-
Default method
Comparative method
Three existing systems are selected which have an historical record of
traffic study data. The criteria for choosing comparative systems is-as
follows:
-
similar line size
&
25%)
-
similar business (bank, hospital, insurance, manufacturing, etc.)
-
similar locality (urban or rural)
---
Once the similar customers have been selected, their station, trunk, and intra
CCS/r
are averaged. These average figures are then applied to calculate
trunk requirements for the SL- 1 being provisioned. Table 3- 1 gives an
example.
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System engineering 553-3001-151