Figure 7: SIP DECT configuration Routed Head Quarter
In Routed Head Quarter Configuration, the 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:
Branch Office Configuration is used for a Large Campus network that is split into various
(geographical) segments (branch offices). IP multicast must be able to occur between all DAPs
in every branch office and no IP multicast is allowed between any two branch offices. In this
configuration, each branch office behaves as an isolated site of a large SIP DECT system.
Branch Office configuration supports seamless handover within each isolated site (branch
office), but not between sites. Support is unavailable for roaming between branch offices. For
Site planning and hardware deployment
30 SIP DECT Fundamentals
October 2012
Содержание CS 1000
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