Table 12 inputs, Table 13 traffic figures – Nortel Networks NN43001-121 User Manual
Page 56
56
Planning and engineering
Table 12
Inputs
Input
Description
TN_MO_Users
Total number of Office Communicator users that use the SIP Access Ports
for voice services.
PCA_MO_Users
Number of Office Communicator users that use Personal Call Assistant (PCA).
The PCAs required here are additional to the number of PCAs provided in the
Enterprise Configurator (EC) tool Software screen.
P_PCA_SIP
Percentage of PCA calls that use the soft client to answer a call.
Calculations
Use the following formulas to calculate traffic requirements
(MO indicates Microsoft Office Communicator):
•
Traffic for PCAs = (PCA_MO_Users) x (CCS per user) x (1 -
P_PCA_SIP) x 10%
•
Traffic for SIP ports = (TN_MO_Users - PCA_MO_Users) x (CCS per
user) + (PCA_MO_Users x P_PCA_SIP) x (CCS per user)
•
Total SIP Traffic = (Traffic for PCAs) + (Traffic for SIP ports)
•
Number of MO SIP ports = Poisson (Total SIP Traffic) at P.01 Grade of
Service
Table 13 "Traffic figures" (page 56)
shows traffic in CCS and number of ports
calculated based on the Poisson formula at P.01 Grade of Service.
Table 13
Traffic figures
Traffic (CCS)
Traffic (Erlang)
Number of ports
5
0.14
2
10
0.28
3
15
0.42
3
20
0.56
4
25
0.69
4
30
0.83
4
35
0.97
5
40
1.11
5
45
1.25
5
50
1.39
6
55
1.53
6
60
1.67
6
65
1.81
6
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121
01.03
Standard
Release 5.0
30 April 2008
Copyright © 2005–2008, Nortel Networks
.