I would like to set up Voice over IP on the Cisco 3640 router. We have an office in the U.S. and one in India....
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We would like to implement VoIP to reduce phone calls. How do I configure the router.
In India you cannot connect a data link along with a Voice link. So at your India end you will need a seperate router. If you have a very limited need than you can use VoIP with FXS ports on the router itself. On both sides you need to create dial-peers and assign a dialing scheme. An indicative configuration is here for your reference. Use it judiciously because it is not tested on a live set up.
US end !configue pots dial-peer voice 1 pots destination-pattern +1408....... port 1/0/0 ! Configure voip dial peer 2 dial-peer voice 2 voip destination-pattern 9........... (india end number) session target ipv4:172.16.65.182 (india end IP address) ! Configure the serial interface interface serial 0/0 clock rate 2000000 ip address 172.16.1.123 no shutdown India end Router ! Configure pots dial peer 1 dial-peer voice 1 pots destination-pattern 9...........(India end number) port 1/0/0 ! Configure voip dial peer 2 dial-peer voice 2 voip destination-pattern +1408(US number) session target ipv4:172.16.1.123 ! Configure the serial interface interface serial 0/0 ip address 172.16.65.182 no shutdown
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