The economical Zoom Model 5806 Voice over IP Telephone Adapter allow standard analog telephones to make and receive calls over a broadband Internet connection. Simply plug a corded phone or cordless phone base station into the adapter and then plug the telephone adapter into a broadband-connected router or Internet gateway. Up to five and often more attached phones can be rung simultaneously using the built-in ring generator.

The Model 5806 supports industry-standard Session Initiation Protocol (SIPv2) and works with a wide range of service providers and SIP-based VoIP equipment.