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Chapter 3 - Defining Network Services
3-54
SIP
Session Initiation Protocol (SIP) is an application-layer protocol designed to
work over IP networks that can establish, modify, and terminate multimedia
sessions (conferences).
The SIP network includes the following components: SIP endpoints, DNS,
SIP Server, and MCU with an IP card.
ISDN
H.320
Endpoint
Figure 3-2: Typical SIP Configuration
For a detailed description of the IP network components, see Appendix E: IP
Network Components.
SIP Server
T1/E1
Spans
MCU
IP
Gatekeeper
H.323
Endpoint
SIP Endpoint
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