User manual PLANTRONICS WIRELESS DENSITY WHITE PAPER

[. . . ] Wireless Density March 2007 Whitepaper In considering how many wireless headsets can be used in a given environment, a range of elements need to be considered. Bluetooth and DECT systems have completely different operating frequencies and neither will cause the other interference. Guidance for DECT (CS60TM, CS70TM & SupraPlus® Wireless) DECT Summary: There are many inter-related factors at play when determining the number of wireless headsets that can be deployedas such, it is very difficult to give absolute recommendations. It is for that reason that Plantronics strongly recommend a site survey for customers interested in deploying more than 70 wireless headsets. [. . . ] This means that it is NOT affected by inference from other radio signals, such as WiFi or Bluetooth. So compared to Bluetooth, it is possible to deploy many more DECT wireless systems. 1: Number of CONCURENT users. The maximum number of concurrent users in a `given area' (something we will come back to) is 70, given the number of channels available. Of course, in a typical office, not everyone is on the phone the whole time. So in simple terms, if call utilisation is 50%, the number of users approximately doubles. This might suggest that if call utilisation is just 20%, 350 users are possible. Each headset (whether in use of not) does take up a part of the available channels. As such, the larger the number of headsets in a given area, the fewer channels available for calls. Some are split into sections, broken up by meeting rooms, walls and open space. These physical barriers get in the way of wireless signals, but don't stop them. And it is the extent of interference between areas in a building that impacts density. If areas are completely separate from a wireless signal perspective, you can have 70 in each assuming 100% call utilisation. The layout, material and many other facts can have a big impact on the extent to which wireless signals travel through a building. A concrete wall provides more separation that a window, a big central atrium will cause more interference between floors, etc. [. . . ] Where more than two WiFi access points are in operation within the same area, operation of the Voyager 510 may be subject to interference. It should also be noted that user density may be reduced when Plantronics Voyager 510's are operated in a WiFi rich environment. (C) 2007 Plantronics, Inc. No part of this document may be reproduced without prior written permission of Plantronics [. . . ]