Can a IP phone work if I simply hook it to a Cisco 3500 switch (properly configured for 802.11Q). From Cisco 3500 is then connected to a Time Warner cable modem/router. Will that support Voice over IP?
Note: This scenario does not include any voice software.
If this configuration should work, then I am thinking about buying a Cisco IP phone and start playing with it.
Assuming you are talking about a Cisco IP Phone, the answer is no, you can't just plug an IP phone into the switch and make it work. You will need a Cisco's CallManager software running on a server to provide connnectivity and dial-plan information to the phone (assuming the phone is using SCCP). If the IP phone is running an H.323 image (would have to be a 7905 or 7912), you could get the phone to come up, however you would need to have an H.323 gateway or other H.323 devices to make it usable. A SIP image on the phone would require a SIP Proxy Server or some SIP intermediary to make it usable.
Your best bet if you are interested in playing with IP telephony in general, is to check out some of the Internet based IP telephony applications.
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