Traffic engineering
154 Avaya Application Solutions IP Telephony Deployment Guide
The general formulas used to populate the COI matrix entries in
Table 22: Inbound COI matrix
for the Uniform Distribution model in Example 2: Uniform Distribution model
on page 151,
Table 23: Outbound COI matrix for Uniform Distribution Model in Example 2: Uniform
Distribution model
on page 152, and
Table 24: Intercom COI matrix for the Uniform Distribution
model in Example 2: Uniform Distribution model
on page 153, respectively, for the Uniform
Distribution model are:
Additional comments regarding
Example 2: Uniform Distribution model
In the Uniform Distribution model introduced in
Example 2: Uniform Distribution model
, the
relative weights that are associated with the various sites correspond to the distribution of
stations throughout the sites. Alternatively, the weights could correspond to the relative overall
station usages in the various sites. Such a model takes into account not only the number of
stations, but also how busy the stations are. In
Example 2: Uniform Distribution model
, since
every station is assumed to have the same usage (specifically, 0.11 Erlangs), the weights that
are based on the number of stations per site are exactly the same as the weights that are based
on the overall station usage per site. Such a model is not always appropriate. For example,
consider a system with two sites, with 100 stations in each site. Suppose that the average
usage per station in Site 1 is 0.1 Erlangs, and that the average usage per station in Site 2 is 0.2
Erlangs. In a Uniform Distribution model where the weights are based on station usage per
endpoint, a caller in Site 1 is twice as likely to call a station in Site 2 than a station in Site 1
(because the total station usage in Site 2 is 20 Erlangs, and the total station usage in Site 1 is
only 10 Erlangs). The general formulas used to populate the COI matrix entries in
Table 22: Inbound COI matrix for the Uniform Distribution model in Example 2: Uniform
Distribution model
on page 151,
Table 23: Outbound COI matrix for Uniform Distribution Model
in Example 2: Uniform Distribution model
on page 152, and
Table 24: Intercom COI matrix for
the Uniform Distribution model in Example 2: Uniform Distribution model
on page 153,
respectively, for the Uniform Distribution model based on relative SUR are:
Inbound CUR to Site i
number of stations in Site i
total number of stations
------------------------------------------------------------------
total inbound CUR
(
)
×
=
Outbound CUR from Site i
number of stations in Site i
total number of stations
------------------------------------------------------------------
total outbound CUR
(
)
×
=
Intercom CUR from Site i to Site j
number of stations in Site j
total number of stations
------------------------------------------------------------------
total intercom CUR
originating in Site i
×
=
Inbound CUR to Site i
total station usage in Site i
total station usage
------------------------------------------------------------------
total inbound CUR
(
)
×
=
Outbound CUR from Site i
total station usage in Site i
total station usage
------------------------------------------------------------------
total outbound CUR
(
)
×
=
Intercom CUR from Site i to Site j
total station usage in Site j
total station usage
------------------------------------------------------------------
total intercom CUR
originating in Site i
×
=
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 ...
