2700 Oregon Road • Northwood, OH 43619 | 1645 West Chester Pike • West Chester, PA 19382 • 1.888.808.6111 | www.telesystem.usAvailable features may vary. Provided feature set is based on the original order andthe system administrator’s requests for each deployment. Please contact your systemadministrator or Telesystem directly to discuss any additions to the system.Basic Call HandlingMake a callLift the handset then enter the phone number, extension, or code you wish to dial.Tap Send to initiate the call or wait for it to go through.Most deployments should be sure to dial 1 before an out of area phone number.Answer a callLift the handset then begin speaking to the caller.Alternately, the Answer soft key, Speaker button, or Headset button may be pressedto answer an incoming call.End a callHang up the handset or tap the End Call soft key.SpeakerPress the speaker button to use speaker audio mode.HeadsetPress the headset button to use headset mode audio (must have a headsetconnected).VolumePress the volume buttons to adjust volume for your ringer when idle oraudio mode while on a live call.MutePress the mute button to mute your audio while on a call. Press again todisengage.Soft keys:State-basedkeys that linethe bottom ofthe screen.Availableoptions willchange basedon whetherphone is inuse or idle.HeadsetMuteVolumeNavigationalButtonsDial PadMessage WaitingIndicator (Voicemail)Programmable Top Keys: One line key plus up to 28 otherfeature buttons may be programmed on the touchscreen.MessagesHoldTransferRedialSpeakerYealink T48SQuick Reference Guide