Planning Page 41 of 206
WLAN IP Telephony Installation and Configuration
Capacities
Table 3 lists the number of wireless handsets supported for the different
physical media used in the network.
In any subnet where wireless handsets will be used, each subnet must have
one or more WLAN IP Telephony Managers 2245. A WLAN IP Telephony
Manager 2245 group on a subnet consists of one or more WLAN IP
Telephony Managers 2245 and their associated wireless handsets. Only one
master WLAN IP Telephony Manager 2245 can be on a subnet.
WLAN IP Telephony Manager 2245 groups
WLAN IP Telephony Manager 2245 groups are those which have more than
one WLAN IP Telephony Manager 2245 in order to accommodate larger
systems and a higher volume of wireless telephony traffic.
Master WLAN IP Telephony Manager 2245
In a group comprised of multiple WLAN IP Telephony Managers 2245, a
master WLAN IP Telephony Manager 2245 must be identified and must be
configured with a static IP address. The wireless handsets and the other
WLAN IP Telephony Managers 2245 locate the master by using the master’s
static IP address. The loss of a non-master WLAN IP Telephony Manager
2245 does not significantly affect the operation of the remaining WLAN IP
Telephony Managers 2245. However, the loss of the master WLAN IP
Telephony Manager 2245 results in a loss of all communication between all
the WLAN IP Telephony Managers 2245. This causes the loss of all active
calls, and wireless handsets cannot check in until communication with the
master is re-established.
Table 3
Supported number of calls and wireless handsets
Media type Number of supported calls
Number of supported
wireless handsets
10BaseT 10 500
100BaseT 80 500
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