Yealink T42 Phone User Guide

Overview
The Yealink SIP-T42 from Metropark is a very productive 3 line PoE VoIP phone with Optima HD Voice for better audio quality on calls. As part of the Yealink T4 Series, the SIP-T42 features a paper label free design, ergonomic recessed buttons and an adjustable stand. Note that the T42 is Gigabit and the T41 is 10/100.  Other than that, the phones are the same.
 
Hardware Features
  • 2.7" 192x64-pixel Gray-scale Graphical LCD
  • 6 line keys with LED and 6 line keys that can be programmed for features
  • 5 features keys: message, headset, mute, redial, speakerphone
  • 4 context-sensitive “soft” keys, 6 navigation keys, 2 volume control keys
  • Dual 10/100 RJ45 Ports
  • RJ9 headset port
  • Configuration: browser/phone/auto-provision
  • Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
  • Optima HD voice with G.711(A/μ), G.722, G.723.1, G.729AB, G.726, GSM Codec support
  • Open VPN, 802.1x, QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP and more