With up to 12 IP voice channels, up to 18 voiceboxes, 2 digital ports, 4 UP0 ports, and 8 analog ports, up to 32 devices can be operated on the ES 548. For network environments, this communication system is available not only as a wall-mounted version but also as a 19" version with just one height unit, known as the ES 548 IT. SmartHome control is, of course, also included, making the ES 548 the perfect communication hub for the SoHo sector.