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Yealink SIP-T54S has been discontinued and is no longer available for purchase. The suggested replacement is Yealink SIP-T54W.
Yealink SIP-T54S is a 16-line VoIP phone for executives with a beautiful 4.3" 16-bit color display. T54S has 10 feature keys for selecting lines, speed dialing, or performing contextual actions. Power users can add up to three color EXP50 expansion modules for more keys. SIP-T54S gives you Optima HD voice technology for beautiful, rich audio on the HAC handset and full-duplex speakerphone, or by connecting wireless headsets using Bluetooth or wired headsets using the RJ9 port. Add WiFi using the optional Yealink WF40 dongle.
Yealink SIP-T54S has dual Gigabit Ethernet ports with pass-through and PoE for giving you lightning-fast speed and for powering the phone through the LAN cable. Yealink IP phones are known for their broad interoperability with major VoIP platforms. Yealink includes advanced security features like SRTP protection and HTTPS certificate managing, as well as full QoS configurability.