Mac equivalent for Callwave?

Hello everyone, my macbook arrived at my door this morning and I am loving it. Of course, I am still one of the ten people left in the US with dial-up internet and was wondering if there was an equivalent to the Callwave program for Mac.

I used Callwave's Internet Answering Machine on my Dell Desktop, and it helped so that I never missed a call, I was wondering if there is any thing out there for mac like this. Thanks.

http://www.callwave.com/landing/internetAnsweringMachine_L1.asp

 

what do you mean by that?