The SIP-T42U IP phone is a feature-rich business tool for excellent communications and extended functionality. Coming with plentiful built-in programmable keys, this 12-line IP phone guarantees the enhanced productivity. United Yealink Optima HD Voice technology and wideband codec of Opus, the T42U awards you the superb audio quality and crystal-clear voice communications. The phone feels quicker and more responsive when performing call features. Moreover, the T42U puts dual USB ports in a phone that makes Bluetooth, Wi-Fi, USB headset and USB recording come true, and you can use any two of them freely according to your needs. The Yealink new T4U series offers the same elegant appearance as the T4 line, but with improvements for greater interoperability and better collaboration.
|Bluetooth||Bluetooth via BT40/BT41|
|Codec||AMR-NB (optional), Opus, PCMU (G.711A), PCMA (G.711µ), G.723.1, G.729, G.729A, G.729B, G.729AB, G.726, iLBC|
|Display||2.7" 192x64-pixel graphical LCD with backlight|
|DSS Keys||6 line keys can be programmed up to 15 paperless DSS keys (3-page view)|
|DTMF||In-band, Out-of-band(RFC 2833) and SIP INFO|
|Operating temperature||-10~50°C (+14~122°F)|
|QoS||802.1p/Q tagging (VLAN), Layer 3 ToS DSCP|
|WiFi||Wi-Fi via WF40/WF50|
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