AboutGerry Magill Expertise I am a Software Architect employed by a large multi-national communications company providing VoIP and tradtional TDM communications to Enterprise customers.
Experience
Past/Present clients IBM, SBS, Siemens, KPMG, Bank Berlin, Commerzbank
Question Does a ip telephony connect direct to router 2801
Answer Hi,
First of all it depends on which Cisco IOS you are running on the 2801 and whether it has the necessary voip feature set in it or not.
Secondly, the SIP variant of the IOS does not contain a proxy. For stand-alone mode like you want to use, Cisco uses a proprietory protocol called Skinny. Only Cisco voip phone speak this protocol.
So if you have the correct IOS and Cisco phones that have the Skinny protocol, you can connect them directly for very basic phone service.