Setting up CTI in service cloud

Hi,

I would like to setup CTI functionality in my developer org. I don't have any existing telephone system where the CTI is implemented.I am just doing a demonstration to my management team how Service Cloud functionality works in real business use case scenarios.Any help is appreciated.

Here is my plan

1) Use my existing land line phone as hardware system or use a VOIP telephone system in computer.

2)Use Salesforce CTI connector for setting up call center.

I am trying to achieve this business scenario : When someone calls to my landline number (eg:1212),the salesforce users accepts the call through softphone and they speak to the caller.

I understand that we need a PBX system or telephone system,but unfortunately I don't have one .If you know any options to achieve this without a telehone system,please let me know.