Wireless Network Design; Frequency Band - Bosch DCN Next Generation Operation Manual

86 en | Planning
4.3

Wireless network design

This chapter tells how to design the wireless network.
4.3.1 Limits
Limit 1: Control capacity
The maximum number of devices in the wireless network that the central control unit can
control is 245.
Limit 2: Coverage area
For a good operation of the wireless part, all wireless discussion units need to be in range of
the wireless access point. The wireless access point has a typical at least coverage area of
30 m by 30 m.
Notice!
You can change the power value of the Wireless Access Point (refer to DCN-WAP Wireless
Access Point, page 205 > Power value).
Limit 3: Frequency
The wireless network must operate in a different frequency band than adjacent wireless
(computer) networks (refer to Frequency band, page 86).
Limit 4: Number of Language Distribution Channels
The wireless network has a maximum of 10 language distribution channels, excluding the
channel for the floor. The total number of language distribution channels in the system, is set
via the interpreter desk (refer to DCN-CCU2 and DCN-CCUB2 Central Control Units, page 183)
or the Conference control software.
If there are more than 10 Language Distribution Channels, only the first 10 channels will be
available for the wireless network. All higher channels will only be available for the (wired)
DCN network and/or the infrared Integrus network.
4.3.2

Frequency band

802.11g specification
The wireless network is based on the 802.11g specification for WiFi technology. Devices that
comply to the 802.11g specification operate in frequency bands between 2.4000 and 2.4835
GHz.
Notice!
Although the system operates on frequencies which are license free world wide, you must be
aware of country specific limitations and follow them.
Wireless computer networks
Wireless (computer) networks can also be based on the 802.11g specification for WiFi
technology. In the wireless computer networks, 13 overlapping channels are available.
Carriers
In the wireless network of DCN Wireless, three non-overlapping wireless carriers are available.
Interference
The wireless network of DCN Wireless can cause interference on wireless computer networks.
You must make sure the DCN wireless carrier does not overlap the WLAN channel.
In the example, the WLAN channel is 3. WLAN channel 3 overlaps DCN wireless carriers 0 and
1. Therefore, use DCN wireless carrier 2.
2013.11 | V2.0 | DCN-NG_OM_V4.x Operation Manual
Conference System
Bosch Security Systems B.V.