Call usage rates
Issue 3.4.1 June 2005
153
It is assumed that half of each individual station’s usage is associated with calls that the station
generates, and the other half is associated with calls that the station receives. Therefore, half of
the 97 Erlangs of station usage (that is, 49 Erlangs) in the Atlanta site corresponds to intercom
calls originated in the Atlanta site. Similarly, half of the 36 Erlangs of station usage (that is, 18
Erlangs) in the Boston site corresponds to intercom calls originated in Boston, and half of the 18
Erlangs of station usage (that is, 9 Erlangs) in the Cleveland site corresponds to intercom calls
originated in Cleveland.
Using the percentages from earlier, the Uniform Distribution model implies that 65% of the
intercom traffic originated by each station in Atlanta is terminated in Atlanta, 24% is terminated
in Boston, and 11% is terminated in Cleveland. Applying those percentages to the 49 Erlangs of
intercom traffic that is generated in Atlanta implies that 32 Erlangs of intercom call usage is
generated in Atlanta for termination in Atlanta, 12 Erlangs of intercom call usage is generated in
Atlanta for termination in Boston, and 5 Erlangs of intercom call usage is generated in Atlanta
for termination in Cleveland. Analogous calculations can be made in relation to intercom traffic
that is generated in Boston and in Cleveland. The results are tabulated in the intercom COI
matrix that is associated with this example (
Table 24: Intercom COI matrix for the Uniform
Distribution model in Example 2: Uniform Distribution model
):
Table 24: Intercom COI matrix for the Uniform Distribution model in
Example 2: Uniform
Distribution model
Intercom CUR
To stations in Site __
(all data in Erlangs)
1
2
3
From stations in Site
____
1
32
12
5
2
12
4
2
3
6
2
1
Summary of Contents for Application Solutions
Page 1: ...Avaya Application Solutions IP Telephony Deployment Guide 555 245 600 Issue 3 4 1 June 2005 ...
Page 20: ...About This Book 20 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 21: ...Issue 3 4 1 June 2005 21 Section 1 Avaya Application Solutions product guide ...
Page 22: ...22 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 106: ...Call processing 106 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 124: ...Avaya LAN switching products 124 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 139: ...Issue 3 4 1 June 2005 139 Section 2 Deploying IP Telephony ...
Page 140: ...140 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 186: ...Traffic engineering 186 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 204: ...Security 204 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 228: ...Avaya Integrated Management 228 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 274: ...Reliability and Recovery 274 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 275: ...Issue 3 4 1 June 2005 275 Section 3 Getting the IP network ready for telephony ...
Page 276: ...276 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 356: ...Network recovery 356 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 366: ...Network assessment offer 366 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 367: ...Issue 3 4 1 June 2005 367 Appendixes ...
Page 368: ...Appendixes 368 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 394: ...Access list 394 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 414: ...DHCP TFTP 414 Avaya Application Solutions IP Telephony Deployment Guide ...