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66 Planning
Figure 17
Part 2: Example of analysis of a packet stream captured between segment A and B
Usually the WLAN IP Telephony Manager 2245 is placed in the same
subnet as WLAN handsets. This was previously a rule, but it is now just
a recommendation. The WLAN IP Telephony Manager 2245 sometimes
must be placed in a different subnet from the handsets. However, the rules
for delay, jitter, and packet loss still apply.
Ethernet connectivity between the WLAN IP Telephony Manager 2245
and the call server, or other voice endpoint, must never exceed 100
milliseconds (ms) of one-way delay, 30 ms of jitter, and 2% packet loss
end to end regardless of the physical properties of the link. Whether the
WLAN IP Telephony Manager 2245 is in the same subnet with handsets,
the link between the WLAN IP Telephony Manager 2245 and the handset
must be under 100 ms of one-way delay, 1 ms of jitter and under 2%
packet loss.
WLAN Application Gateway 2246 planning
The optional WLAN Application Gateway 2246 requires a 10 Mbs
half-duplex switched Ethernet connection.
Nortel Communication Server 1000
WLAN IP Telephony Installation and Commissioning
NN43001-504 03.04 Standard
23 September 2008
Copyright © 2004–2008 Nortel Networks
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