MANUAL FOR SYSTEM INTEGRATOR
4
with a large IP PBX.
Inhabitants can check visitors with VP113/P, ID5101, monitor public
areas or call each others with extension numbers.
Connect to SIP VoIP services via Internet.
Use of SIP
SIP, initial of Session-Initiation-
Protocol, it is an application-layer
control (signaling) protocol for
creating, modifying, and
terminating sessions with one or
more participants. These sessions
include Internet telephone calls,
multimedia distribution, and
multimedia conferences. In short,
SIP is a most commonly used
protocol that has been used to
interconnect SIP Enabled PBXs
and/or SIP User Agents to each
other to establish voice and video
sessions between SIP based devices over IP Network.
Figure 3: General SIP Application
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