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Yealink T48G

You do not need to dial any numerical prefix before dialing an extension or external number. Simply dial the extension or 10 digit number.

Call Forwarding

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1. Tap the Menu softkey.

2. Select Features > Call Forward.

3. Turn On the desired forwarding type.

  • Always: Forwards all incoming calls.
  • No Answer: Forwards all unanswered incoming calls.
  • Busy: Forwards calls that arrive when you’re already in a call.

Note: Call Waiting must be disabled (Menu > Features > Call Waiting) to enable Call Forward Busy.

4. Enter the internal extension or external number to which calls will be forwarded.

5. If you selected No Answer, enter how many rings to wait before forwarding.

6. Tap the Save softkey (to disable call forwarding, disable the forwarding type).

Tip: While your phone rings, press the Forward softkey to forward the incoming call to another person.

Do Not Disturb (DND)

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Enabling DND stops your phone from ringing and sends all incoming calls directly to voicemail.  Calls are logged in your Missed Calls.

1. Tap  to enable/disable.

Voicemail Access

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1. Press .

2. Dial your password (default 0000).

Speed Dial

1. Tap and hold an unassigned Line key.

2. Change the Type to Speed Dial.

3. Enter a Name and Number.

4. Press the Save softkey.

3-Way Calls

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1. While on an active call, tap the Conference softkey.

2. Dial the internal extension or external number to add to the conference.

3. Wait for the second party to answer, and then let them know that you would like to add them to a 3-way call.

4. Tap Conference again.

Warm Transfer

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Places a current call on hold and allows you to speak with the other party before transferring the call to them.

1. While on an active call, press .

2. Dial the internal extension or external number.

3. Speak with the destination party.

Tip: To cancel a warm transfer, look for the Cancel or EndCall softkey. This will take you back to the original call, or allow you to resume.

4. Press .

Blind Transfer

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A blind transfer routes a call to another party without speaking to them first.

1. While on an active call, press .

2. Dial the internal extension or external number.

3. Press  before the destination party answers.

Tip: To transfer a call directly to voicemail, dial 0 + extension.


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1. Press  to hold/resume the call.

Modify Ringtone

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1. Tap the Menu softkey.

2. Select Basic > SoundRing Tones.

3. Select the desired ringtone (press the Play softkey to sample ringtones).

4. Tap the Save softkey.

Note: This device supports silent ringtones.

Presence Monitoring

In order to presence monitor, you must have the feature enabled on your device by an administrator. If not enabled, contact your system administrator for assistance.

Note: The lines that you wish to monitor must be speed dial assignments on your phone.

*Softkeys are buttons located around the display whose function changes depending on the context. These keys are managed by your system administrator.

See a feature you don’t understand? See our phone feature glossary.

Call Handling Features

  • Warm Transfer
  • Blind Transfer
  • Do Not Disturb (DND)
  • Call Forward All
  • Call Forward Busy*
  • Call Forward No Answer
  • Anonymous Call Rejection
  • Intercom (* + ext)

*Call waiting must be disabled.

  • Hold
  • Multi-way Calling
  • Reject
  • Call Waiting
  • On-hook Dialing
  • Speakerphone
  • Stutter Tone

User Interface Features

  • Call Logs
  • On Device Directory
  • Multicast “Mega Volume*
  • Bluetooth

*Requires latest firmware version and additional configuration.

  • LDAP Directory
  • Adjustable Ringer Volume
  • On Device Call Recording
  • Electronic Hook Switch (EHS)


Feature Keys

  • 16 SIP Accounts
  • 30 Virtual Upper Multifunction Keys*
  • On Device Speed Dial Edit

*Supports line assignments.

  • Voicemail Button
  • Mute Button


  • Touch Display
  • Message Waiting Indicator (MWI)
  • Caller ID (CID)
  • Busy Lame Field (BLF)

*Requires latest firmware version and additional configuration 


  • Shared Line Appearance*
  • Time/Date Display
  • On-Screen Message Display

Network & Provisioning

  • On Device Ethernet (PoE)
  • One Touch Activation
  • PC Connection
  • Gigabit Ethernet
  • Cisco Multicast
  • Polycom Multicast
  • Web Interface Provisionable
  • Secure Provisioning


  • Digital Sidecar w/20 Programmable Keys*
  • Up to 6 Sidecars

*Supports line assignments.

  • Wired Headset

Before you begin:

  1. Verify a device profile has been created.
  2. Verify the phone’s MAC address has been assigned to the device profile.

From the Web Interface (Web UI)

1. Press the Menu key.

2. Select Status and then write down the phone’s IP Address (it may scroll to display the entire address).

3. Open an incognito window in Google Chrome, type the IP address into the address (URL) bar, and then press Enter on your keyboard.

4. Enter the Device Admin Password. You can find this password within the Jive Administration Security tab.

Note: If this password is not accepted, contact Customer Support for assistance.

5. Go to Settings tab > Auto Provision.

6. Enter http://‹domain› for the Server URL.

Note: Replace ‹domain› with your unique domain (found in parentheses at the top of the admin dashboard).

7. Click [Confirm] > [Auto Provision Now].

8. Click [Yes] to reboot.

Note: Once your phone reboots, you must manually power cycle the device as well to apply its provisioning settings.

Reset Secure Provisioning

After a factory reset on a phone, you’ll need to reset secure provisioning from Jive Administration as well so it can reconnect to Jive.

1. Click Devices in the left sidebar.

2. Click the device that needs secure provisioning reset.

3. From the Hardware tab > Reset Secure Provisioning, click [RESET].

Below is a list of compatible accessories for your device supported by Jive.

Adds Bluetooth connectivity to your IP Phone with a wide variety of Bluetooth Headsets, allowing you to receive calls wherever you are in the office.

Provides the technical interface between your phone and a compatible wireless headset. Supported models include those by Jabra, Plantronics and Sennheiser headsets.

Expands the functional capability of your phone with a large graphic LCD screen and 40 programmable display keys.

For a complete list of supported features, visit the Supported Features tab.

This dynamic plug-and-play style USB device is an ideal office networking solution for companies—particularly, smaller organizations—seeking affordable, convenient and reliable high-speed wireless connectivity.

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