How to add a Mitel IP 485G phone that I need to add to my Ring Central Network?

If your Mitel 485G shows "No Service," it usually means it hit the server but didn't finish the firmware migration. Try these basic steps:

1. Hard Factory Reset

Rebooting isn't enough; you must clear the old configuration:

• While the phone is idle, press Mute.

• Dial 25327# (CLEAR#).

• Select Clear when prompted. The phone will reboot.

2. Verify Config Server

• Press Mute, then dial 73887# (SETUP#).

• Go to Services > Config Server.

• Ensure the address is exactly: 34.110.141.137

• Save and select Apply to reboot again.

3. The "Dial 400" Trigger

• Once the phone reboots, look for a message: "Dial 400 to switch to RC".

• Lift the handset, dial 400, and press Dial.

• The screen should say "Upgrading". This can take 15 minutes and involve multiple reboots. Do not unplug it.

If the steps above fail, your phone may require a manual firmware bridge or have a hardware revision conflict.

Please submit a support ticket via the RingCentral Support Portal to speak with our Dedicated Deskphone Support team. They can verify your device's MAC address and guide you through the specific conversion process for your hardware.

Hi Mary,

Thanks for the response. I have followed your steps to a tee, but unfortunately still receive the same “no service” message. I’ve tried using numerous different ethernet cables - even ones that currently have working phones. 

What else can I try?

Thanks,

Hello ​@ppamcastaldo, Apologies for the late response. I’ve been out for the past week. Have you had a chance to reach out to Support yet?