Siemens OptiPoint 410 Advanced IP Phone (White/Refurbished)The Siemens OptiPoint 410 Advance telephone is a fully duplex IP telephone with a high end speaker phone. The OptiPoint 410 Advance is a cost effective and flexible option that can reduce administration costs and efforts through its 10 100 Base T mini switch, which allows it to be connected to the corporate LAN. Key Features: Function and speed dial keys with LEDs 19 Virtual Local Area Network support (VLAN) Loudspeaker Control keys for ringer volume