Traffic Density Calculations; System Deployment; Dect Deployment Kit 2 - Nortel CS 1000 Manual

38 Site planning and hardware deployment
•
A DAP or a handset interferes with sensitive laboratory equipment
and medical equipment (for example, ensure that DAPs are installed
outside of an operating room at an hospital.)
•
Ensure that significant interference from unsuppressed engines or
electric motors is accounted for.
Traffic density calculations
Perform the traffic density calculations so that you have a low blocking
probability in the system.
For traffic calculations, you must know
•
the number of users
•
the type of users
The following table lists the three user types.
Table 3
Three user types
The Erlang value for DAP C4710 and C4710E (12 radio channels), with
blocking probability of 0.5%, is 5.25.
Calculate the traffic density using the following formula:
One cell has 20 users: five average traffic and 15 low traffic. The load is:
(5 x 0.15) + (15 x 0.05) = 1.5 Erlang
Therefore, one 12 channel DAP is sufficient for this cell.

System deployment

This section describes the basics of SIP DECT system deployment.

DECT Deployment Kit 2

The DECT Deployment Tool (deployment tool) determines cell centers and
cell boundaries.
Traffic
Low
Average Executive and secretary
High help desks, Tele-services
Nortel Communication Server 1000
SIP DECT Fundamentals
NN43120-123 02.02 30 March 2010
Copyright © 2008-2010 Nortel Networks. All Rights Reserved.
Application
normal offices
groups
Erlang/User
0.05
0.1-0.15
0.2-0.25