Page 26 of 206 Overview
553-3001-304 Standard 3.00 September 2004
Access Points
802.11b Access Points (APs) provide the connection between the wired
Ethernet LAN and the wireless (802.11) LAN. APs must be positioned in all
areas where the wireless handsets will be used. The number and placement of
APs affects the coverage area and capacity of the wireless system. Typically,
the requirements for use of WLAN Handset 2210 and WLAN Handset 2211
are similar to that of other wireless data devices.
The APs must be SVP-compliant to support QoS. For a list of supported APs,
refer to Appendix B: “Compatible Access Points” on page 197.
AP switchover
When a user on an active call is moving about, the call switches from AP to
AP in the subnet. This changeover is transparent to the user.
Loss of signal
If a wireless handset is out of range of all APs, it waits 20 seconds for a signal
to return. If a signal is not re-acquired within 20 seconds, the wireless handset
loses connection to the Call Server and any calls are dropped. When the
wireless handset comes back into range of an AP, it re-establishes a
connection to the Call Server and goes through the system registration
process.
Note: If a wireless handset is out of contact with the system for four
seconds (worse case scenario) when the UNIStim messaging is
occurring, then a UNIStim failure could result, causing the wireless
handset to lose the UNIStim association with the LTPS.
To Next Page
Loading...
