Explaining RFC 5359 with SIP service examples
There are many ways to implement a PBX feature using SIP. Fortunately, RFC 5359 details the best practices on how to implement them. It will be our guide while implementing PBX services in a SIP ecosystem. It describes call flows and the role of user agent clients, user agent servers, and proxies in the process in detail. Following the examples in RFC 5359 will simplify your work as many IP phone manufacturers also use the same standard to implement the services in their own phones. In the next section, we will demonstrate in detail how to implement some of the services in the RFC.
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