How to Set Up and Troubleshoot Desk Phones

Modified on Thu, Jun 4 at 7:36 PM

⚠️ Try a factory reset first — it solves the majority of phone issues including registration failures, audio problems, and call forwarding. Don't skip this step.

Supported models: Cisco SPA504G and Yealink T46S / T46G / T46U. Polycom phones are 3rd-party and not provisioned by Lucid.

Factory Reset

Cisco SPA504G

  1. Press the Menu button
  2. Navigate to Factory Reset and confirm
  3. Phone reboots and re-provisions automatically

No password required.

Yealink T46S / T46G / T46U

  1. Hold the OK button (center of directional pad) for 8 seconds
  2. Press OK to confirm the prompt
  3. Phone reboots and re-provisions automatically

No password required. All three T46 models are identical.

Ethernet Ports

Model Wall cable Second port
Cisco SPA504G SW PC port — connect a computer or daisy chain
Yealink T46S / T46G / T46U INT PC port — connect a computer or daisy chain

⚠️ Daisy-chaining a second phone requires a separate power adapter — PoE does not pass through.

Register a New Phone

  1. Find the MAC address on the label on the bottom of the phone
  2. Add it to the correct extension in the PBX
  3. Factory reset the phone — it will auto-provision within 1–2 minutes
  4. Ensure the wall cable is in the correct port (SW for Cisco, INT for Yealink)

Call Forwarding

Call forwarding is managed in the PBX, not on the phone.

  1. Log into the PBX admin panel
  2. Find the member's extension
  3. Enable Call Forward Always or Busy / No Answer
  4. Enter the destination number and save — takes effect immediately

Audio & Headset Issues

  1. Factory reset the phone — resolves most audio problems
  2. Check that the headset is fully seated in the port
  3. Try a different headset to rule out hardware failure
  4. Re-pair wireless headsets after a reset

Need help? Submit a support ticket or contact the Lucid tech team.

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