Do I need a Voip Adapter?

[nighttraindb]

Hello and thank you for taking the time to read this message. Ok, I am a complete novice to this whole process, I now have the IVM Answering Attendant and what I am looking to have it do is provide a more professional atmosphere to my office.

 

Basically, I am looking for it to answer and play music until someone picks up. I am also looking for it to provide options push 1 for this push 2 for that.

 

Now, if my terminology is off please bare with me. I currently am providing local to long distance service for inmates. I am using a server on callwithus, so I was wondering if there was someway I can plug (dedicate a computer) to answering the phone and utilizing my PBX Server on callwithus.com to help in forwarding the phone calls when they push the appropriate button?

 

Do I require one of thes liksys type Voip Adapters (like Vonage PAP2) that I currently have?

 

Any assistance in answering anything here or pointing me in the right direction would be greatly appreciated.