What Do I Need to Connect My Multi Office Printer to VOIP, and Wirelessly Be Able to Print From the Other 4 Pc?

Using Canon MX-850, which has no built in print server. To connect into my VOIP to use as fax I am assuming I need something like the pap2, but how do I work this into a print server also? Will be using wireless network with 4 office pc's and need to be able to print from all pc's to this printer.