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Monday TECHtionary.com TECH-Tip – SIP-Session Initiation Protocol Proxy Server with Special Example – Cisco CCM-CallManager Route PatternsMonday TECHtionary.com TECH-Tip – SIP-Session Initiation Protocol Proxy Server The animated TECH-Tip tutorial is available at http://www.techtionary.com Summary SIP-Session Initiation Protocol is the real-time communication protocol for VOIP-Voice over IP. SIP has been expanded to support video and instant-messaging applications. Details SIP is designed to perform basic call-control tasks, such as session call set up and tear down and signaling for features such as call hold, caller ID, conferencing and call transferring. However with SIP, the intelligence for call setup and features resides on the SIP device or user agent, such as an IP phone or a PC with voice or instant-messaging software. In contrast, traditional telephony or H.323-based telephony uses a model of intelligent, centralized phone switches with dumb phones with SS7-Signaling System 7 in PSTN-Public Switched Telephone Network telephone switching and H.323 or Media Gateway Control Protocol in IP telephony providing call control/routing. For more go to www.sipforum.org Special Example – Cisco CCM-CallManager Route Patterns CCM-Cisco CallManager route (dialing) planning consists of: - Route Pattern (numbers) - matches dialed number or translates (manipulates) to Route Lists - Route Lists (call roadmaps/directions) which can point to the same Route Group - Route Groups - interconnection devices - CCM-Cisco CallManager and Gateways to the PSTN-Public Switched Telephone Number Gateways - individual Gateways can only be in one Route Group Simply, telephone calls or Route Patterns are placed in Route Lists where they are verified and placed via Route Groups. User dials telephone number Route Pattern is sent to Route List. Route List which compares with Route Groups. Call Pattern is routed (connected) via Route Group device. If Multiple Route Groups, CCM routes call via First Route Group. If First Route Group unavailable, then route via Second Route Group or return busy signal. Shown in the animation are examples of Route Patterns for internal call, call via Gateway and via IP-WAN. About TECHtionary.com – 303-444-6226 TECHtionary Corporation founded in 2001 and headquartered in Boulder, Colorado is the World's First and Largest Animated (rich media) Library/Magazine on Technology. Get the analysis and more than 2,603+ free tutorials on data, internet, wireless, VoIP-Voice over Internet Protocol (internet protocol telephony), PBX systems, computing, security, content, central office switching, protocols, telephony, telecommunications, networking, routing, power systems, broadband, WiFi-Wireless Fidelity and other technologies, TECHtionary.com provides "just enough – just-in-time" critical success information. TECHtionary produces web infomercials proven to "increase revenues, decrease customer support costs and increase customer satisfaction." |