--- title: "Yealink SIP-T33G, T40G, T42S, T43U" slug: "yealink-sip-t33g-t40g-t42s-t43u" description: "Looking for comprehensive online help with your Yealink SIP-T33G, T40G, T42S, or T43U? Our help guide has you covered! With clear and concise explanations, our guide is user-friendly and accessible for both beginners and advanced users alike. ENA by Zayo is here to help you get the most out of your Yealink phone. " updated: 2024-05-10T21:13:10Z published: 2024-05-10T21:13:10Z canonical: "help.ena.com/yealink-sip-t33g-t40g-t42s-t43u" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.ena.com/llms.txt > Use this file to discover all available pages before exploring further. # Yealink SIP-T33G, T40G, T42S, T43U [Download Quick Reference Guide](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/QRG-Yealink-T33G-T40G-T42S-T43U.pdf?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) NoteThe screen size, screen color, location of the buttons, and location of line keys vary slightly between these phone models, however, the steps to use the features described below are the same. ## Getting to Know Your Phone ### Soft Keys Soft keys appear at the bottom of your screen and change depending on where you are in a call sequence. You select a soft key by pressing the physical button directly underneath it. Watching your soft keys is one of the most helpful things you can do when using your phone. In almost all cases, the action you are most likely to take next in a call sequence will appear as a soft key. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20soft%20keys.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ### Buttons Buttons are physical keys on your phone that are programmed and labeled to always perform a specific function (e.g., microphone mute). ### Locating Phone Extension The phone's extension is typically programmed into the first one or two buttons and is displayed on the screen. NoteHaving two keys programmed with the phone's extension makes it easy to answer a second incoming call or place a second outbound call. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20your%20extension.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ### Navigate Onscreen Lists and Menus You use the navigation dial to navigate onscreen lists and menus. The button in the center functions as an enter or select key. ## Set Up and Check Voicemail ### Set Up Voicemail for Phone's Extension The first time you access the **Message Center** on a phone, the system will walk you through the voicemail setup. Depending on the phone model, you may access the **Message Center** by pressing the Voicemail button (marked with , , or **MESSAGE**) or the **Vmail** soft key. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20voicemail%20set%20up.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ### Check Voicemail From Your Phone Press the Voicemail button (marked with , , or **MESSAGE**) or the **Vmail** soft key, and follow the prompts. ### Check Voicemail From Another UCaaS Phone 1. Press the Voicemail button (marked with , , or **MESSAGE**) or the **Vmail** soft key on the phone you are using. 2. When you hear the voicemail greeting, press the star key (*). 3. Enter your full 10-digit number when prompted.Note:If you have an extension-only number, your full 10-digit number will be a customer prefix followed by your extension. If you do not know your customer prefix, check with your System Administrator. 4. Follow the prompts. ### Check Voicemail Remotely If you have a direct dial number: 1. Call your number. 2. When you hear your voicemail greeting, press the star key (*). 3. Follow the prompts. If you have an extension-only number: 1. Dial 877-675-1152. 2. Enter your full 10-digit number.Note:If you have an extension-only number, your full 10-digit number will be a customer prefix followed by your extension. If you do not know your customer prefix, check with your System Administrator.3. Follow the prompts. ### Set Up and Check Voicemail on Line Forked to Your Phone (e.g., Main) If you have another line on your phone in addition to your personal extension: 1. Press the line key to select which voicemail to access. 2. Press the Voicemail button (marked with , , or **MESSAGE**) or the **Vmail** soft key. The first time you access the Message Center for the forked line, the system will walk you through your voicemail setup. ### Voicemail Menu Options NoteDepending on the feature package assigned to the extension, sub-menus may vary slightly from those shown in the chart. ![ENA SmartVoice voicemail menu options (1)](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/ENA%20SmartVoice%20voicemail%20menu%20options%20(1).png?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ## Place Calls Note You do not have to dial a nine, zero, or any other prefix to make an outbound call. You may dial any other UCaaS phone in your system using the phone’s 4 or 5-digit extension. ### Using the Handset 1. Using the dial pad, enter the number you are calling. 2. Pick up the handset. NoteYou can place a call by picking up the handset before dialing. However, please be aware that the system will attempt to complete the call after a slight pause in entering digits on the dial pad. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20place%20call%20using%20handset.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ### Using the Speakerphone 1. Using the dial pad, enter the number you are calling 2. Press the speaker button or the **Send** soft key. NoteYou can place a call by picking up the handset before dialing. However, please be aware that the system will attempt to complete the call after a slight pause in entering digits on the dial pad. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20place%20call%20using%20speaker.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ### Using the Headset 1. With the headset connected, press to activate the headset mode. 2. Enter the number 3. Press the **Send** soft key. NoteDuring a call, you can alternate between the headset, speakerphone, and handset modes by pressing , the **Speakerphone** key or by picking up the handset. Headset mode requires a connected headset. ## Answer Calls ### Using the Handset When a call comes in, pick up the handset. ### Using the Speakerphone When a call comes in, press , the **Answer** soft key, or the flashing line key. ### Using the Headset With your headset connected and activated, press when a call comes in. ### Answer Second Incoming Call Press **Answer** or the flashing **Line Key**. NoteWhen you answer a second call, the first caller is automatically placed on hold. ## Reject Calls To reject an incoming call and send it directly to voicemail, press the **Reject** soft key. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20reject%20calls.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ## End Calls ### Using the Handset Press the **EndCall** soft key or place the handset in the cradle. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20end%20call%20off%20hook.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ### Using the Speakerphone Press or the **EndCall** soft key. ### Using the Headset Press the **EndCall** soft key. ## Redial Press twice when the phone is idle to place an outgoing call to the last dialed number. ## Mute and Unmute Calls Press to mute the microphone during a call. Press again to unmute the call. ## Hold and Resume Calls ### Place a Call on Hold Press the **Hold** soft key or hold button (if available) during an active call. Hold buttons are marked with a phone handset combined with a pause symbol. ### Resume a Held Call Press the flashing line key, the **Resume** soft key, or the hold button, if available. NoteIf there is more than one call on hold, you may need to press  or to select the desired call before you see the **Resume** soft key. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20hold%20and%20resume%20calls.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ## Transfer Calls ### Blind Transfer To transfer a call to a recipient without speaking with the recipient first, use a Blind transfer. 1. When on an active call, press the **Trans** soft key. The call is placed on hold. 2. Enter the number to which you want to transfer the call. 3. Press the **B Trans** soft key. NoteIf you have a button on your phone programmed as a speed dial, a one-touch transfer, or an enhanced monitor extension, you may press that button during an active call to blind transfer the call to that extension. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20transfer%20blind.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ### Consultative transfer If you would like to speak to the recipient before transferring a call, use a Consultative transfer. 1. Press the **Trans** soft key during an active call. The call is placed on hold. 2. Enter the number of person to whom transferring call. 3. When finished entering number, wait or press **Send**. 4. When the recipient answers, let them know transferring call. 5. If recipient says available to take call, press **Trans** to complete. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20transfer%20consultative.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) #### Return to the Original Caller If the transfer recipient isn't available to take the call, press the **End** **Call** soft key. Then, take the original call off hold by pressing the blinking line key or the **Resume** soft key. #### Swap calls during consultative transfer Once you connect with the transfer recipient during a consultative transfer, press **Swap** to return to the original caller. Press **Swap** again to return to the transfer recipient. [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20transfer%20consultative%20swap.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ### Direct to Voicemail Transfer #### Transferring to a 4-Digit Extension 1. Press the **Trans** soft key during an active call. The call is automatically placed on hold. 2. Enter *90 followed by the extension to which you want to transfer the call. 3. Press **B Trans** soft key. #### Transferring to a 5-Digit or 6-Digit Extension 1. Press the **Trans** soft key during an active call. The call is automatically placed on hold. 2. Enter * followed by the number to which you want to transfer the call. 3. Press **B Trans** soft key [Video](https://cdn.us.document360.io/ed04ecbf-0868-4e77-a11e-6df8b843143d/Images/Documentation/Yealink%20T40G%20transfer%20to%20voicemail.mp4?sv=2026-02-06&spr=https&st=2026-10-30T19%3A58%3A21Z&se=2026-10-30T20%3A58%3A21Z&sr=c&sp=r&sig=feLdLX9RFRMyJOIvwQJ4%2FoAhGDWxm%2FeFMgpB1F%2B1qys%3D) ## Forward Calls Using Phone Menu NoteYou may also use an Access (Star) Code for this feature. 1. When the phone is idle, select **Menu > Features > Call Forward**. 2. Select the desired forward type: - **Always Forward** - Incoming calls are forwarded unconditionally. - **Busy Forward** - Incoming calls are forwarded when the phone is busy. - **No Answer Forward** - Incoming calls are forwarded if not answered after a period of time. 3. Enter the number to which you'd like to forward calls in the **Forward to** field. 4. For **No Answer Forward**, press  or to select the desired ring time to wait before forwarding from the **After Ring Time** field. 5. Press **Save** to accept the change. ## Make a Conference Call 1. Press the **Conference** soft key during an active call. The active call is automatically placed on hold. 2. Enter the number of the party you would like to conference in. Wait, or press the **Send** soft key. 3. When the second party answers, press the **Conference** soft key again. All parties are now joined in the conference. 4. Press the **EndCall** soft key to disconnect all parties or to leave a three-way conference. 1. You can split the conference call into two individual calls by pressing the **Split** soft key. NotePressing **EndCall** in a *three-way* conference will not disconnect all parties. The other parties will remain connected. If you would like to end the call for all three-way parties, **Split** into individual calls then **EndCall** each. ## Park Calls **Call Park** allows you to place a call on hold so it can be retrieved from any other UCaaS phone in your building. ### Park a Call To park a call: 1. Press **Transfer**. The call is automatically placed on hold. 2. Dial ***98**. 3. Press **Send** or wait. 4. You hear a message telling you the orbit number on which the call is parked and prompting you to complete the transfer. Press **Transfer** to complete. 5. Let the call recipient know they have a parked call and the orbit number on which the call is parked. ### Pick Up a Parked Call To pick up a parked call, go to any UCaaS phone in the building and dial *99 followed by the orbit number. NoteIf you would like to use the call park feature and it is not activated on your phone, please contact your System Administrator. ## Do Not Disturb (DND) When your phone is set to Do Not Disturb and your extension is assigned a Pro or Executive feature package, your phone will not ring, and incoming calls will be rejected When your phone is set to Do Not Disturb, and your extension is assigned any other feature package besides Pro or Executive, your phone will not ring, and incoming calls will be forwarded immediately to your voicemail. You can toggle Do Not Disturb on and off by going to **Menu > Features > DND** or by pressing the **DND** soft key, if it is available. NoteIf you are not receiving calls, check to make sure Do Not Disturb is not activated on your phone. ## Paging If UCaaS is integrated with your building's intercom system, your System Administrator will provide you with an extension to dial for making announcements through the building speakers. If your system is set up with one zone only (typically All Call): 1. Dial the intercom system extension. 2. Make your announcement. 3. When finished, hang up. If your intercom system is set up with multiple zones for broadcasting announcements to specific areas. (e.g., outside, East wing, etc.): 1. Dial the intercom system extension. 2. When you hear a tone, enter the number of the zone you wish to broadcast to. 3. After hearing another tone, make your announcement. 4. When finished, hang up. ## Access and Use Call History You can view a list of up to 100 missed, placed, received, and forwarded call records. 1. Press the **History** soft key when the phone is idle. Press or to scroll through the list. 2. Once an entry is highlighted, you can: - Press the **Send** soft key to call the entry. - Press the **Delete** soft key to delete the entry from the list. - Press the **Option** soft key to: - Select **Detail** to view detailed information about the entry. - Select **Add to Contact** to save the contact to the local directory. - Select **Add to Blacklist** to add the entry to the blacklist. - Select **Delete All** to delete all entries from the list. ## Clear Missed Calls Alert To clear the onscreen **Missed Calls** alert, press **History** to view your Missed Calls. ## Adjust Volume ### Adjust Call Volume During an active call, press **+** or **-** to adjust the call volume. ### Adjust Ringer Volume While the phone is idle or ringing, press **+** or **-** to adjust the ringer volume. ## Change Ring Tone AlertChanges to ring tones made through your phone's menu will reset to the default each evening. If you wish to customize the ring tone, please contact your System Administrator. ## Program Phone Keys Available phone keys set as speed dials and one-touch transfer buttons, are managed by your System Administrator or through the User Portal. WarningWhile it is possible to make changes through the phone menu instead of the portal, any changes made this way will be reset to the default when the phone reboots. The phone reboots if disconnected from its power source or during overnight system updates. ## Access (Star) Codes | Access Code | What It Does | Available In Feature Package | Notes | | --- | --- | --- | --- | | *53 | Directed Call Pickup | All except Prime | Dial *53 followed by the extension of a ringing phone to pick it up. | | *54 | Group Call Pickup | All except Prime | Dial *54 to pick up a call ringing on a phone that is a member of a Call Pickup Group of which your phone is a member. Call Pickup Groups are set up by your System Administrator. | | *62 | Enable Busy Call Forwarding | All except Pro and Executive | Extensions assigned a Pro or Executive feature package, are forwarded using the **Reach Me** function in the User Portal and not access (star) codes. | | *63 | Disable Busy Call Forwarding | All except Pro and Executive | Extensions assigned a Pro or Executive feature package, are forwarded using the **Reach Me** function in the User Portal and not access (star) codes. | | *69 | Automatic Recall | All | Plays an announcement of the number of the last call received. | | *72 | Enable Unconditional Call Forward | All except Pro and Executive | Extensions assigned a Pro or Executive Feature Package, are forwarded using the **Reach Me** function in the User Portal and not access (star) codes. | | *73 | Disable Unconditional Call Forward | All except Pro and Executive | Extensions assigned a Pro or Executive Feature Package, are forwarded using the **Reach Me** function in the User Portal and not access (star) codes. | | *92 | Enable Call Forwarding on No Answer | All except Pro and Executive | Extensions assigned a Pro or Executive feature package, are forwarded using the **Reach Me** function in the User Portal and not access (star) codes. | | *93 | Disable Call Forwarding on No Answer | All except Pro and Executive | Extensions assigned a Pro or Executive feature package, are forwarded using the **Reach Me** function in the User Portal and not access (star) codes. | | *98 | Call Park | All | Press Transfer followed by *98 to park a call. Call Park is enabled by your System Administrator. | | *99 | Retrieve Parked Call | All | Press *99 followed by the Park Orbit to retrieve a parked call. Call Park is enabled by your System Administrator. | | *318 | Voicemail | All | |