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.
9
The WIT-400HE is only 802.11b/g compliant, its maximum frequency is 2.4GHz and 54 Mbps maximum
bandwidth.
For more detail information of cell planning, please refer to the manual of AP.
1.3 Access
Point
The following is a list of APs that have been made an imperative experimentation with the WIT-400HE
and the result.
Rank
AP
Max retry
counter
Simultaneous
Call
Reject after
Full Assoc
Roaming
Multiple
SSID
Power
control
WPA
Best
Cisco – AP1231G
O
12
X
O
O
O
O
Good Cisco
– AP1121G
O
10
X
O
O
O
O
Max retry counter : It’s the maximum retry counter of data packet from AP to client. If the retry counter
of a packet exceeds the limit, the packet is discarded. If the AP don’t support max retry counter, it can
make network busy by excessive retransmit when a user goes to out-of-range in conversation.
When the receiving packet rate is very low during 10 seconds, WIT-400HE disconnects the call to prevent
excessive retransmit of packets.
The simultaneous calls are estimated in idle network configuration, so it can be decreased by the
network condition. When the AP is commonly used for data and voice, the bandwidth for voice call will be
decreased. If you use overlapping channels, radio frequency interference can occur, which leads to
connectivity issues and in poor throughput.
Reject after Full Assoc. : This feature support to restrict the number of association simultaneously for
load balancing.
Roaming : It means that the call in conversation is not disconnected when it reams to other AP. To
support seamless roaming, the signal range of each AP should be overlapped.
If you need to use roaming feature, we strongly recommend Cisco AP. The other APs above support
roaming but they are unstable. We received report that the phone is muted sometimes after roaming with