an illustration of a Branch Office Configuration, see
Figure 8: Branch Office Configuration
page 31.
Figure 8: Branch Office Configuration
For Branch Office Configuration, network settings must comply with the following requirements:
• The network between Branch Offices and Call Server must support QoS.
• Branch Offices must be in separate subnets (IP router(s) needed).
• DAPs in various Branch Offices must be located so that no synchronization can occur
between any two DAPs belonging to various Branch Offices.
• Routers must block IP multicast between Branch Offices (multicast TTL = 1, which means
that IP multicast packets do not cross IP routers).
Routed Head Quarter Configuration with Branch Office:
Routed Head Quarter Configuration with Branch Office makes it possible to create a Routed
Head Quarter Configuration in one (and only one) the branch office. Within the Branch Office
with Routed Head Quarter, DAPs belong to various subnets and behave as a single site of one
SIP DECT system with the full support of seamless handover. As for the whole SIP DECT
system, each Branch Office (including the Branch Office with Routed Head Quarter) behaves
as isolated site of that 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.
Types of SIP DECT configuration
SIP DECT Fundamentals
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