January 2016
Intermediate to advanced
384 pages
8h 6m
English
In this chapter, you learned what the SIP protocol is and its functionality. We saw different SIP components, such as the SIP proxy, SIP Registrar, user agent client, user agent server, and PSTN gateway. We also got acquainted with the SIP architecture and its main messages and processes.
In the next chapter, we will be introduced to OpenSIPS and its basic architecture and components.
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