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Cisco Voice Gateways and Gatekeepers presents distinct recommendations to real-world difficulties encountered while enforcing a VoIP community. each one bankruptcy offers an outline of a expertise by way of an in depth state of affairs and linked suggestions. Emphasis is put on the authorized top practices and customary concerns encountered. it's going to before everything serve readers as a reference for advanced gateway and gatekeeper deployments and also will be a invaluable learn relief for the Cisco Certifified Voice specialist (CCVP) certification music. Cisco Voice Gateways and Gatekeepers is split into 5 sections. half one presents an advent to the jobs of either gateways and gatekeepers and contains recommendation on whilst to exploit every one. half makes a speciality of deploying gateways; operating with MGCP, H.323, and SIP; connecting to the PSTN, PBXs, and the IP WAN; configuring simple and complicated dial friends; and imposing SRST. half 3 specializes in deploying and configuring gatekeepers. half 4 discusses use of gateways and gatekeepers in a merchant surroundings. half 5 addresses use of the Cisco software Command Language (TCL). This e-book is usually instructed self-study education for the CCVP GWGK examination.
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Voice traffic can then go through the link. MGCP Fallback An MGCP gateway sends keepalive messages to its primary CallManager every 15 seconds. If CallManager does not respond in 30 seconds, the gateway switches over to the next configured CallManager. 323 session application, if it is so configured. All active MGCP analog and T1 CAS calls are maintained during the fallback transition. Callers are unaware of the fallback transition, and these active MGCP calls are cleared only when the communicating callers hang up.
The file is refreshed if changes are made to CallManager that require the gateway to be reset. Be sure to save any manual configuration to NVRAM, or it might be overwritten if the router downloads a new XML file. 323 dial peers, be sure to configure the MGCP ones first if you are using this auto-config feature. 10 (via FastEthernet0/0): ! [OK - 4445 bytes] Next, you need to bind MGCP to the voice ports. You do this by configuring a dial peer for each voice port and binding MGCP to it using the application MGCPAPP command.
Part II: Gateways You then specify the endpoints that CallManager will control, by selecting subunits within the modules and configuring each port. Figure 2-8 shows an example with one PRI, four FXO, and four FXS interfaces. CallManager will control all six endpoints in this one MGCP gateway. To configure a specific port, click on the link for it. The necessary configuration depends on the type of endpoint. Configure the directory number for FXS ports here, rather than on the router. Figure 2-8.