VoIP phones allow you to make international calls at a 
comparatively cheaper rate, so you could make personal or business calls economically. Yealink SIP-T28P Executive VoIP Phone is a superb phone with a number of function buttons, display and corded handset. The display type of this phone is LCD and it comes with 320 x 160 pixels screen resolution.
This Yealink VoIP phone supports up to 6 VoIP lines, emergency call and hotline. It has 10 programmable DSS keys. On hook dialling is possible and a high definition speaker of 8 Ohm/1 Watt power present in this phone offers you hands free calling. This phone has 3-way conference capability, call hold, call transfer, call waiting, call forwarding and call list functions. It allows speed dialling to a pre stored number. Ring tones can be personalised and it allows logo customisation as well. The phone can be locked for safety. It is voice mail compatible and has auto redial and caller ID function. On hook dialling is possible and it has mute facility too. It comes with 4 soft keys, 16 programmable keys with LED’s and message waiting indicator. Yealink VoIP phone is multi-language compatible. It has Admin/User configuration mode and system log export. Additional features include Dial-now, Auto-answer, BLF, DND, Call Park, Call pickup, dial plan and intercom. The dimensions of this phone are 310 mm x 290 mm x 110 mm and its weight is 1.6 Kg.
With TI Titan chipset, Yealink SIP-T28P IP Ready Executive VoIP Phone has SMS capability and supports SRTP voice encryption, VAD, CNG, AEC, PLC, AJB and AGC. The phone supports HD Wideband voice codec G.722 and narrowband voice codec’s such as G.711, G.726, G.729AB and G.723.1. This VoIP phone has PoE standard, 2 RJ45 Ethernet ports and a headset port. It supports DHCP, Static IP, PPPoE IP assignment, SIP 2.0 protocol, In-band DTMF, Out-band DTMF and SIP INFO DTMF. This phone has proxy mode and peer-to-peer SIP link mode, MD5, MD5-sess standard encryption and authentication. It has secure RTP and secure configuration file via AES encryption.
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