iPECS WIT-400HE - Page 32

24 Chapter 2 Getting Started
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 doesn’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 congura-
tion, 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 Association: 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 roams 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
found that sometime the AP doesn’t send packets after roaming in
our laboratory investigation.
Recommended AP specication for WIT-400HE
To recommend proper Access Point for WIT-400HE, Ericsson-LG
specied as the following 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
trac
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.