Nortel CS 1000 Manual page 29

of a Routed Head Quarter configuration, see
configuration Routed Head Quarter" (page
Figure 6
SIP DECT configuration Routed Head Quarter
In Routed Head Quarter Configuration network settings must comply
with the following requirements:
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Branch Office Configuration
The network must support Quality of Service (QoS) and IP
connectivity throughout the Campus.
Routers must support IP multicast routing.
The IP multicast address for SIP DECT must be the same in all
subnets.
Multicast Time to live (TTL) must be greater than 1.
In the SIP DECT configuration, you must use an "aggregated"
subnet mask that covers all the subnets where DAPs are present.
For instance, if each subnet is defined by mask 255.255.255.0,
then "aggregated" mask 255.255.248.0 covers up to four such
subnets.
Nortel Communication Server 1000
SIP DECT Fundamentals
NN43120-123 02.02 30 March 2010
Copyright © 2008-2010 Nortel Networks. All Rights Reserved.
Types of SIP DECT configuration 29
Figure 6 "SIP DECT
29).