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In any subnet where wireless handsets are 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 that 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 static IP address of the master. The loss of a nonmaster 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 reestablished.
Group capacities
The number of calls that an individual WLAN IP Telephony Manager 2245
can support is dependent on the number of WLAN IP Telephony Manager
2245s in the subnet. Assuming that a 100 Mb/s full-duplex connection to the
network exists, a single stand-alone WLAN IP Telephony Manager 2245 can
manage up to 80 active calls. If two WLAN IP Telephony Manager 2245s
are installed in a master/slave configuration, each can support up to 64
active calls for a total of 128 calls.
Nortel Communication Server 1000
WLAN IP Telephony Installation and Commissioning
NN43001-504 01.02 Standard
Release 5.0 15 June 2007
Copyright © 2004-2007, Nortel Networks
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