Supporting both traditional PSTN phone lines and VoIP lines, Uniden Office Express™ 1600 includes firewall security and built-in Wi-Fi router. System offers features such as simultaneously ringing office phone and cell phone, auto attendant, complete voicemail system, and one-touch call recording. Intended for offices with 2-50 employees, plug-and-play system additionally includes caller ID, voicemail to email notification, system-wide paging, and multiple music-on-hold options.