Table of Contents
Advertisement
Traffic engineering
The general formulas used to populate the COI matrix entries in
for the Uniform Distribution model in Example 2: Uniform Distribution model
Table 23: Outbound COI matrix for Uniform Distribution Model in Example 2: Uniform
Distribution model
model in Example 2: Uniform Distribution model
Distribution model are:
Inbound CUR to Site i
Outbound CUR from Site i
Intercom CUR from Site i to Site j
Additional comments regarding
In the Uniform Distribution model introduced in
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
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
in Example 2: Uniform Distribution model
the Uniform Distribution model in Example 2: Uniform Distribution model
respectively, for the Uniform Distribution model based on relative SUR are:
Inbound CUR to Site i
Outbound CUR from Site i
Intercom CUR from Site i to Site j
154 Avaya Application Solutions IP Telephony Deployment Guide
on page 152, and
Table 24: Intercom COI matrix for the Uniform Distribution
number of stations in Site i
----------------------------------------------------------------- -
=
total number of stations
number of stations in Site i
----------------------------------------------------------------- -
=
total number of stations
=
Example 2: Uniform Distribution model
on page 151,
Table 23: Outbound COI matrix for Uniform Distribution Model
total station usage in Site i
------------------------------------------------------------------
=
total station usage in Site i
------------------------------------------------------------------
=
=
on page 153, respectively, for the Uniform
number of stations in Site j
----------------------------------------------------------------- -
total number of stations
Example 2: Uniform Distribution
Example 2: Uniform Distribution
on page 152, and
Table 24: Intercom COI matrix for
total station usage
total station usage
total station usage in Site j
------------------------------------------------------------------
total station usage
Table 22: Inbound COI matrix
on page 151,
total inbound CUR
total outbound CUR
total intercom CUR
originating in Site i
model, the
model, since
on page 153,
total inbound CUR
total outbound CUR
total intercom CUR
originating in Site i
Advertisement
Table of Contents
