Your Teams desk phone isn't working

Overview

If your Microsoft Teams desk phone (e.g., Yealink) is offline or not working after a software update, follow these troubleshooting steps to restore functionality.

---

Symptoms

• Teams desk phone shows offline status.
• Unable to make or receive calls.
• Device may be frozen or stuck after an update.

---

Cause

• Network connectivity issues (wired or Wi-Fi).
• Device did not restart properly after an update.
• Corrupted configuration requiring a factory reset.

---

Resolution

Step 1: Restart the Phone

• Unplug the power cable (or disconnect from the network if using Power over Ethernet).
• Wait 30 seconds and plug it back in.
• Allow the phone to fully restart and check if it comes online.

---

Step 2: Check Network Connection

• If using Wi-Fi:
  • Confirm the phone is connected to Wi-Fi.
  • Restart your Wi-Fi router if needed.
• If using wired Ethernet:
  • Ensure the cable is securely connected.
  • Try a different cable or port if possible.

---

Step 3: Reset the Phone to Factory Settings

• If the phone is frozen or stuck, perform a factory reset:
  • Yealink: Press and hold the OK button until prompted to reset.
• After the reset, you will need to sign in to Teams again on the phone.

---

Step 4: Contact IT Support
If the phone is still offline, provide IT with:

• Confirmation that you tried restarting and resetting.
• The phone’s model and brand (found on the back or bottom of the device).
• Note that the issue occurred after a software update.

IT can check for network issues or reinstall the software remotely.

---

Additional Notes

• Ensure the phone is connected to the correct VLAN if required for Teams devices.
• If using Power over Ethernet (PoE), confirm the switch port provides sufficient power.