The SIP-T19P E2 is one of Yealink's latest answers for the entry-level IP phone that offers features and performance normally associated with much more advanced phones. The quite intentional choice of high-quality materials, combined with a generously large 132x64-pixel graphical LCD that gives a clear 5-line display,guarantees both a smoother user experience and easy access to much more visual information at a glance. Dual 10/100 Mbps network ports with integrated PoE are ideal for extended network use. The SIP-T19P E2 supports single VoIP account, simple, flexible and secure installation options, plus IPv6 and SRTP/HTTPS/ TLS, VLAN and QoS. It includes headset use, wall-mountable and has been designed very specifically for better business.IP Phone Technology: VoIPConnectivity Technology: CableTotal Number of Phone Lines: 1Caller ID: YesSpeakerphone: YesNetwork (RJ-45): YesNumber of Network (RJ-45) Ports: 2PoE (RJ-45) Port: YesCommunication Protocols: SIPCommunication Protocols: SIP v2Communication Protocols: STUNCommunication Protocols: NATCommunication Protocols: DHCPCommunication Protocols: SNTPCommunication Protocols: UDPCommunication Protocols: TCPCommunication Protocols: SRTPCommunication Protocols: TLSCommunication Protocols: RTCP XRPower Source: AC AdapterForm Factor: DesktopForm Factor: Wall MountableHeight: 5.6Width: 7.3"Depth: 7.4""