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SIP Trunking Diagram<br />
© <strong>Sangoma</strong> Technologies<br />
April 2013<br />
Demarc<br />
LAN<br />
SBC<br />
WAN<br />
IP<br />
Network<br />
IP PBX<br />
IP Router<br />
RTP<br />
SRTP<br />
SIP / UDP<br />
SIP / TLS<br />
• SBC used to provide security between the two IP<br />
Networks<br />
• May also handle signaling interoperability<br />
• May also handle basic transcoding<br />
• Connection from PBX could be digital or analog<br />
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