Why SIP and why Verto?
Remember: this choice only impacts how you write the Javascript on the webpage the browser loads to access FreeSWITCH server. We'll see later in this chapter we can have the same exact application written for each one of protocols, indistinguishable from the end user's point of view and experience.
SIP albeit complex will be intimately known to all programmers coming from a telecom background, with its concepts of session, dialog, transaction, the familiar REGISTER-INVITE-BYE methods, etc. It's the perfect choice to integrate WebRTC clients in a complex environment, and enjoys 20 years of experience in scaling, monitoring, deploying.
Verto is a completely different experience: is very simple and it uses programming ...
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