The NEC SV8100 phone they have 12/24/32 button digital and IP phone. This phone has a display, speaker/receiver volume, ringer volume, shortcut menu, call back, call forward, voice call, programming system and station speed number, function key, transfer, hold, last number redial, conference and answer a second calls. This NEC product and services are design to target the small to medium business needs and still maintain a business basic need to a lower cost. This system can support digital and VOIP phones. We understand in the last year, it has been harder to find tech that can support these systems. If you are in a bind, and looking for a vendor that can support you, please feel free to contact us.