Yealink T4 Series IP Phones User Guide15NO. Item Description5MESSAGE Key Accesses your voice messages.HOLD Key Places a call on hold or resumes a held call.Only the T46S/T46G phones have a HOLD key.REDIAL Key Redials a previously dialed number.TRANSFER Key Transfers a call.Only the T46S/T46G phones have a TRANSFER key.6 Speakerphone KeyToggles the speakerphone (hands-free) mode on or off. The LED indicator glows greenwhen the speakerphone is activated.The T40P/T40G phone does not have key light.7 Volume Key Adjust the volume of the handset, headset, speaker.8 Keypad Keys Allow you to enter numbers, letters, and special characters. If a menu item has an indexnumber, you can use the keypad keys to select the item.9Navigation Keys • Scroll through information or options displayed on the screen.• Access History and Directory respectively.OK Key Confirms actions or answers incoming calls.Cancel Key Cancels actions or rejects incoming calls.10 Soft Keys Access the function displayed on the screen above the soft keys. The soft keys changedepending on what you are doing at the time.11 Speaker Provides ringer and speakerphone audio output.12 Reversible TabSecures the handset in the handset cradle when the phone is mounted vertically. Formore information on how to adjust the reversible tab, refer toYealink Wall MountQuick Installation Guide for Yealink IP Phones.13 Hookswitch Connects or disconnects the phone from the phone line. The hookswitch is auto-matically activated when a user lifts the handset from the cradle to get a dial tone.Power LED IndicatorThe power LED indicator indicates the call, message and phone’s system status.LED Status DescriptionSolid red The phone is initializing.Fast-flashing red (0.3s) The phone is ringing.Slowly-flashing red (1s) The phone receives a voice mail or text message.Solid red for 0.5s and off for3s alternatelyThe phone enters the power-saving mode.It is only available on the T48S/T48G/T46S/T46G phones.