Version 6.4 207 March 2012
SIP User's Manual 14. Control Network
Figure 14-3: Configuring SRDs and Assignment
Typically, an SRD is defined per group of SIP UAs (e.g., proxies, IP phones, application
servers, gateways, softswitches) that communicate with each other. This provides these
entities with VoIP services that reside on the same Layer-3 network (must be able to
communicate without traversing NAT devices and must not have overlapping IP
addresses).
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