Manual Calculation - Meridian Nortel 1 Option 11C Technical Reference Manual

Manual calculation

Table 19
Example of manual calculation of CCS/T
Cutover
2 years
5 years
Normally, the customer can estimate the number of trunks required at cutover
and specify the grade of service to be maintained at two-year and five-year
periods (see Table 19). (If not, use the comparative method described on
page 93.)
The number of trunks can be read from the appropriate trunking table to select
the estimated usage on the trunk group. The number of lines that are accessing
the group at cutover are divided into the estimated usage. The result is the
CCS/T which can be used to estimate trunk requirements.
Example:
• Line CCS/T = 6.2
• Trunk CCS/T = 4.1
• 2 consoles = 30 CCS
Line CCS = 275 x 6.2 =
Trunk CCS = 275 x 4.1 =
Subtotal =
Console CCS =
Total system load = 2863
Line CCS = 304 x 6.2 =
Trunk CCS = 304 x 4.1 =
Subtotal =
Console CCS =
Total system load = 3162
Line CCS = 352 x 6.2 =
Trunk CCS = 352 x 4.1 =
Subtotal =
Console CCS =
Total system load = 3657
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