WIT-400HE Installation Manual
Date: 15/M ar/2012
This Document Contains proprietary information and may not be reproduced or copied without express
Written permission of a duly authorized representative of Ericsson-LG Co.Ltd.
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1.3.2 How to set up multiple APs
Our recommendation is that one AP(Access Point) is used for one cell area. If you would install
more than two APs for a cell, we recommend you to use the same SSID for each AP. And the APs
should have different RF channel far away than 5 channels each other. For example, AP1 has RF
channel 1, then AP2 should have RF channel 6. If the RF channel number of the APs is overlapped
near within 5 channels, the retransmission for data communication may be increased. As the
result of this the standby time of WIT-400HE may be decreased and the voice quality will be very
poor. So, you should check this carefully.
If you want to increase the capacity of wireless network by increasing APs, you need to control
the transmit power level of APs not to overlap too much. If the radio frequency is overlapped too
much, it can decrease the throughput of the APs.
Please refer to “6. Cell Planning” chapter to get the detail information for installing multiple APs
1.3.3 Recommended AP specification for WIT-400HE
There are many kinds of Access Point in the world. To recommend proper Access Point for WIT-400HE,
LG-Ericsson specified as the following. An Access point has more satisfied item, it is better to WIT-400HE.
When you purchase an AP, you’d better to refer to this list.
No Item Description
1 802.11 b/g 802.11 b/g should be supported
2 Simultaneous call Minimum 4 simultaneous calls should be supported
3 Reject access when full traffic It can be adjusted in the admin program
4 Max retry counter It can be set in the admin program or should not be
transmitted
5 Continuous call Long term call(longer 12 hours) should be supported
6 Roaming within same kind of AP Seamless handover/roaming should be supported
7 Traffic distance Longer than 200 meters
8 Antenna diversity More than 2 antennas
9 AP manager AP manager can some configuration like channel, SSID,
WEP key, and so on.
10 WDS Wireless Distribution System should be supported
11 External antenna Connector type should be supported
12 European CE Type Approval CE should be approved for European market
13 USA UL Type Approval UL should be approved for USA market
14 USA FCC Type Approval FCC should be approved for USA market
15 Canada CSA Type Approval CSA should be approved for Canada market
16 Korea MIC Type Approval MIC should be approved for Korea market
17 WiFi certification WiFi should be certified for mutual compatibility
18 RF power control Fixed power and auto power should be supported
19 DHCP, NAT DHCP and NAT should be supported
20 Price Low price
21 QoS Voice packet should be handled with high priority
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