Call usage rates
Issue 3.4.1 June 2005
155
Example 3: Empirical approach for existing systems
Another possible means of populating the COI matrices exists for established systems. In such
cases, the necessary information can be read from traffic reports. This method is particularly
useful for customers who are considering an upgrade from their current equipment.
Expanded COI matrices
So far, all the discussion pertaining to COI matrices has focused on a macroscopic view of sites.
In particular, all the COI matrices presented have dedicated one cell for each pair of sites. In
preparation for
Resource sizing
on page 162, it is useful to partition each such cell into
collections of smaller cells that describe the call flows between different communities of
endpoint types within the sites.
One possible partitioning scheme for each site is to create the following three general endpoint
categories:
●
IP endpoints
●
Circuit-switched endpoints
●
PSTN trunks
Consider the COI matrix for a three-site, stand-alone Communication Manager system, as
presented in
Table 21: 3-site standalone community of interest (COI) matrix
on page 148. A
suitable expansion of that matrix might take the form of the matrix in
Table 25: Expanded COI
matrix for a three-site system
on page 156 in which
●
I represents IP endpoints
●
C represents circuit-switched endpoints
●
P represents PSTN trunks
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 ...