Linksys SPA2102 2-Port 10/100 Wired Router (SPA2102-NA)
Inexpensive, easy to install, and simple to use, the Cisco SPA2102 Phone Adapter with Router connects a standard telephone or fax machine to an IP-based data network. Voice over IP (VoIP) service prov...
Pros: Incredibly configurable - precise settings let you change every nuance of every behavior
Cons: Incredibly configurable - precise settings let you mess up every nuance of every behavior