The AudioCodes 420HD IP Phone 420HDE is a certified IP phone designed for business use, offering 2 lines with the ability to handle 8 concurrent calls per line. If the LAN to which the phone is connected supports Power over Ethernet (PoE), no AC adapter is required; the phone receives power from the Ethernet network. note AC adapter is not included. This sleek black phone boasts a duplex speakerphone capability, making it ideal for efficient and clear communication in a business setting. With its reliable brand reputation and advanced features, the AudioCodes 420HD IP Phone.