VoIP desk phone with Fast Ethernet switch. Up to 0 SIP accounts, black. Screen diagonal: 3.5 inches with a resolution of 396 x 162, touchscreen: no. PoE: yes, Wi-Fi: no, Bluetooth: no. Headset connection type: RJ-9. Supports wideband audio, built-in speakerphone. Fixed keys for quick operation. Equipped with numerous features. With integrated functions such as call forwarding, call transfer, or message waiting, this IP phone is ideally suited for use in small to medium-sized businesses. Furthermore, it supports various VoIP protocols and is equipped with a Fast Ethernet switch. Easy installation thanks to PoE. This network-capable device is powered via Power over Ethernet (PoE) through the LAN cable. The main advantage of PoE is that you do not need a power supply cable. This allows you to install Ethernet-connected devices even in hard-to-reach places or in areas where many cables would be disruptive. You save installation costs and can increase the reliability of connected devices by using a central uninterruptible power supply (UPS) if desired. Simplifying internal communication thanks to IP telephony. Benefit from the advantages of IP telephony (also known as VoIP). By transmitting voice and control information over a data network, computers, IP-telephony specialized terminal devices, and traditional phones can connect with each other. IP technology allows you to implement telephone services on Internet Protocol infrastructure, thereby replacing your conventional telephone technology including ISDN and all components. The use of IP telephony enables cost reduction due to a uniformly operated network. The transition can also be realized as a long-lasting, gradual change - referred to as "soft migration.".