WIT-400HE Installation Manual
Date: 15/M
ar/2012
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Written permission of a duly authorized representative of Ericsson-LG Co.Ltd.
10
Linksys AP. We found that sometime the AP doesn’t send packets after roaming in our laboratory
investigation.
O : We strongly recommend.
∆: It supports roaming feature, but it’s unstable or not verified enough
.
X : It doesn’t support roaming feature.
Multiple SSID : The AP supports multiple SSID.
AP TX Power Control : It can control the signal range of AP. It’s very important to install multiple APs in
small area. The frequency of adjacent APs is overlapped too much, you can decrease the transmit power
to reduce the interference of radio frequency.
WPA : It make wireless network more securely protected. It authenticates with the server and changes
the encryption key dynamically.
IPOne AP is made in Korea.
Note: In case using AP supported 802.11n, we recommend Cisco Aironet 1250 Series AP. However, you
must reconsider cell plan include because of the characteristics of 802.11n MIMO AP. We recommend
you contact the Access Point technical support team
1.3.1
Which one is better
Depending on the internal implementation of IEEE802.11b/g protocol inside of the APs, roaming across
two contiguous regions may be affected. Cisco is currently showing most optimized seamless roaming.
CISCO APs are strongly recommended to customers. IPOne is estimated that it’s less than CISCO
but it performed good as we can recommend. Other APs did work well in low traffic, but it’s
unstable in high voice traffic, more than 8 calls simultaneously. Other APs also don’t support
transmit power control.
If you need to use multiple APs, we strongly recommend Cisco AP. The other APs are unstable for the
roaming feature.
The most important thing to select AP is the environment of the site to install. The number of
simultaneous voice call should be considered carefully to support stable voice quality. We also
recommend that the association number of an AP doesn’t exceed 30 clients to prevent poor voice quality.
We can suggest as follows in each conditions.
(1) 20 ~ 30 clients in an AP (less than 12 calls simultaneously)
A. Cisco-AP1231G
(2) 10 ~ 20 clients in an AP (less than 10 calls simultaneously)
A. Cisco-AP1231G
B. Cisco-AP1121G
(3) Less than 10 clients in an AP (less than 8 calls simultaneously)
A. Cisco-AP1121G