Chapter 11 Setting Up Skype in the Workplace
Solutions in this chapter:
A Word about SIP and H.323
Skype does not use SIP or H.323, but we thought we would cover these two protocols so that you could understand two of the main VoIP protocols used and how they differ from Skype. Session Initiation Protocol, or SIP, is a text-based protocol that uses port 5060 on both UDP and TCP for call setup and teardown. Version 2.0 of SIP has been codified in RFC 3261, where the various details of SIP are included. SIP is a signaling protocol very much like the telco SS7 protocol suite, but unlike SS7, which is very centralized and requires a private network, SIP was designed ...
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