Filter
Top Products
Page 94 of 544 Provisioning
553-3011-100 Standard 14.00 January 2002
If only the trunk CCS/T is available, multiply the trunk CCS/T by 0.5 to
determine the intra-CCS/T (assuming a normal traffic pattern of 33 percent
incoming calls, 33 percent outgoing calls, and 33 percent intra-system calls).
The trunk CCS/T and intra CCS/T are then added to arrive at the line CCS/T
(see the example in Table 18).
The individual CCS/T per trunk group is not added to form the trunk CCS/T.
The trunk CCS/T is the total trunk load divided by the total number of lines
at cutover.
From the preceding information, trunk CCS/T can be computed as follows:
trunk CCS/T = total trunk load in CCS/ (number of lines) = 959/234 = 4.1
Assuming a 33 percent intra-calling ratio:
intra CCS/T = 4.1 x 0.5 = 2.1
line CCS/T = 4.1 (trunk CCS/T) + 2.1 (intra CCS/T) = 6.2
Table 18
Example of CCS/T averaging when only trunk CCS/T is known
Trunk type
Number of
trunks
Grade of
service
Load in CCS
Number
of terms
CCS/T
DID 16 P. 0 1 294 234 1.20
CO 14 P. 0 2 267 234 1.14
Tie 7 P. 0 5 118 215 0.54
Paging 2 10 CCS/trunk 20 207 0.09
Out WATS 4 30 CCS/trunk 120 218 0.54
FX 2 30 CCS/trunk 60 218 0.27
Private line 4 20 CCS/trunk 80 4 20.00
Total: 959 Total: 23.78