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376 Appendix B Branch Office engineering example
252 x 100 ÷ 120 = 210 calls
3
Calculate the IP Phone to analog (500/2500-type) telephones:
IT to AT CCS x 100 seconds ÷ average hold time = IT to AT calls
108 x 100 ÷ 120 = 90 calls
4
Calculate the analog (500/2500-type) telephone to Virtual Trunks
(IPPT) calls:
AT to IT CCS x 100 seconds ÷ average hold time = AT to IPPT calls
72 x 100 ÷ 120 = 60 calls
5
Calculate the Call Server loading in EBC:
IT to IT calls x (1+f1) + IT to MOR calls x (1+f2) + IT to AT calls x
(1+f3) + AT to IPPT calls x (1+f4) = Call Server EBC
150 x 2.15 + 210 x 1.68 + 90 x 1.48 + 60 x 1.18 = 879.3 EBC
6
Calculate the Call Server loading in percent:
Call Server loading ÷ CS maximum EBC = % loading
879.3 ÷ 35000 = 3%
Requirement: The loading of this configuration for Call Server is very
low at 3%. This Call Server can be located at the Branch Office or
anywhere within the zone.
—End—
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.