Nortel Networks Option 11C Calculating line, trunk, and console load

Page98 of 544 Provisioning

553-3011-100 Standard14.00 January 2002

Use Reference Table 2 on page114 to determine the quantity of trunks

required to meet the trunk CCS at cutover, two-year, and five-year intervals.

In this case:

•17 DID trunks are required at cutover

•18 DID trunks are required in two years

•21 DID trunk are required in five years

For trunk traffic greater than 4427 CCS, allow 29.5 CCS/T.

Calculating line, trunk, and console load

Once the quantity of trunks required has been estimated, enter the quantities

in Worksheet A for cutover, two-year, and five-year intervals. This

calculation must be performed for each trunk group to be equipped. The total

trunk CCS/T is the sum of each individual trunk group CCS/T. This value is

also entered in “Worksheet A: Growth forecast” on page 135.

Line load is calculated by multiplying the total number of 500-telephone TNs

by the line CCS/T. The number of TNs is determined as follows:

•one TN for every DN assigned to one or more Analog (500/2500 type)

telephone

•one TN for every Meridian Digital Telephone without data option

•two TNs for every Meridian Digital Telephone with data option

Trunk load is calculated by multiplying the total number of digital telephone

and 500-line TNs which have access to the trunk route by the CCS/T per trunk

route.

Console load is calculated by multiplying the number of consoles by 30 CCS

per console.