Configuration Tasks - Avaya Communication Server 1000 Installation And Commissioning Manual

the wireless handsets and WLAN IP Telephony Manager 2245 units must be in the same
logical subnet.
• RTP packets between the wireless telephone and the WLAN IP Telephony Manager 2245
always contain 30 ms worth of voice, no matter what is configured on the Call Server. The
WLAN IP Telephony Manager 2245 repackages the RTP packets to conform to the size
that is configured in the Call Server. This provides more efficient use of the available Radio
Frequency (RF) bandwidth at the expense of slightly increased jitter and latency.
• The WLAN IP Telephony Manager 2245 is configured with a maximum allowable number
of simultaneous media streams on a single AP. The WLAN IP Telephony Manager 2245
keeps track of the number of media streams on each AP and blocks calls to and from a
wireless handset that would exceed the configured capacity. For more information about
call blocking, see
• The WLAN IP Telephony Manager 2245 has limitations for high availability. There are
some types of failure that can result in complete outages. Every group of WLAN IP
Telephony Manager 2245 units in a single subnet has a master node. If this node fails
or if connectivity to it is lost, the entire WLAN IP Telephony Manager 2245 group fails. All
active calls are lost and no future calls can be placed until the master WLAN IP Telephony
Manager 2245 is replaced (either by installing a spare or by reconfiguring one of the slaves
to be a master).
• Alternately, if one of the slave WLAN IP Telephony Manager 2245 units fails, the group
as a whole still functions, although some individual calls can be lost due to the reassigning
of handsets throughout the group. One less WLAN IP Telephony Manager 2245 also
means that the call capacity of that node is lost until the failed WLAN IP Telephony
Manager 2245 is replaced.
A keep-alive packet exchange runs between the wireless handset and the WLAN IP Telephony
Manager 2245 every 30 seconds. If the wireless handset detects that the WLAN IP Telephony
Manager 2245 is unreachable, the wireless handset resets itself and attempts to reestablish
a connection with otherthe master WLAN IP Telephony Manager 2245 units.

Configuration tasks

The following are the tasks required to configure the WLAN IP Telephony Manager 2245:
1.
2.
3.
4.
5.
Avaya WLAN IP Telephony Installation and Commissioning
Call blocking
Connecting the APs on page 132
Connect to the WLAN IP Telephony Manager 2245
Configure the network
Radio Settings on page 137
QoS Configuration on page 137
on page 87.
on page 134.
Configuration tasks
on page 132.
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