User's Manual

Types of SIP DECT configuration 29

of a Routed Head Quarter configuration, see Figure 6 "SIP DECT

configuration Routed Head Quarter" (page 29).

Figure 6

SIP DECT configuration Routed Head Quarter

In Routed Head Quarter Configuration network settings must comply

with the following requirements:

— 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.

• Branch Office Configuration

Nortel Communication Server 1000

SIP DECT Fundamentals

NN43120-123 02.02 30 March 2010