Yealink SIP-T28P is an executive IP phone designed for power users in office environment.
It is especially designed for maximum productivity and efficiency in every-day business environment.
Using TI chipset and Voice Engine SIP-T28P offers unrivalled superb HD Voice Quality, innovative functional richness, friendly user interface, stylish and elegant design.
It is definitely able to provide a pleasant and satisfactory end-user experience.
SIP v1(RFC2543), v2(RFC3261)NAT transverse: STUN modeIP Assignment: Static/DHCP/PPPoEIn-Band DTMF, Out-of-Band DTMF, SIP InfoProxy mode and Peer-to-peer SIP link modeTFTP/DHCP/PPPoE clientTelnet/HTTP serverDNS clientNAT/DHCP serverSupport VLAN, QoSPoE optional
Wideband Codec: G.722, voicespectrum between 50-7000HzNarrowband Codecs: G.711, G.726,G.723.1/iLBC, G.729AB and GSMVAD, CNG, AEC, PLC, AJB, AGCFull-duplex hands-free speakerphone-compliant with IEEE 1329support Hearing Aid Compatible (HAC)
Secure RTPDigest authentication using MD5/MD5-sessSecure configuration file via AES encryption
Call Hold, Call Waiting, Call Transfer, Call ForwardCaller ID, Call List, DND, Redial, Flash3-way Conference, Speed DialPersonal Ring Tone, VoicemailVolume Adjustment, Mute, SpeakerphoneLogo Customization, Black List, Phone LockAdmin/User Configuration ModeContact List Export/ImportSystem Log Export/ImportHotline, Signal Tone SettableMulti-language
SMS, BLF/BLA, Paging, IntercomDownloadable enterprise phonebookCall Park, Call Pickup, Distinctive RingtoneAuto-answer, Dial Plan, Dial-now
Firmware Upgrade: TFTP/Console/Auto-provisionAuto-provision: TR069 OptionalDirect IP call without SIP proxyDial number via SIP serverDial URL via SIP server
TI Titan ChipsetLCD: White backlit 320x1604-level grayscales16 DSS Keys, 4 soft keysNetwork Interface: 2xRJ45 10/100M ports1 headset jackExpension Module PortSpeaker: 8 Ohm/1 WattDimension: 273 x 204 x 42 mmWeight: 1.05 kgPower adapter: Input: AC 100~240VOutput: DC 5V/1AOperating humidity: 10~95%Storage temperature: up to 60 C
