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How to Port Your Fax Number Away from Updox

Porting your fax number from Updox to another provider is a multi-step process. It requires you to complete a Letter of Authorization and submit accurate account information to your new fax service provider.

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Written by Lisabeth

🔑 Key Information You’ll Need

Before you begin, gather the following information:

  • Company name and address on file for your Updox account

  • Billing Telephone Number (BTN) and authorized user details (verify with Updox Support)

  • Account number (if applicable)

  • PIN or passcode (if required by your gaining carrier)

💡 Tip: Contact Updox Support or email porting@updox.com to confirm that all information matches what’s on file. Incorrect or outdated details are the most common reason for porting delays.

📋 Step-by-Step Porting Process

1. Contact Your New Provider

Reach out to the gaining carrier (your new fax service provider or EMR vendor) and request their LOA form.

  • Ask to speak with a live agent to make sure you receive the correct form.

  • Confirm what additional information they may need, such as a copy of a recent bill or whether a PIN or passcode is required.

2. Complete the LOA Form

Fill in the LOA with the exact information you verified with Updox.

  • Include the company name, address, BTN, and fax number(s) you want to port.

  • Ensure all fields are accurate and complete.

3. Sign the LOA

The LOA must be signed by an authorized user on your Updox account.

  • If you are unsure who is authorized, confirm with Updox Support.

4. Submit the LOA

Follow the gaining carrier’s instructions to submit the completed, signed LOA.

  • A live agent from the gaining carrier can confirm where and how to send the form (email, upload, or fax).

5. Wait for Confirmation

Your gaining carrier will coordinate with Updox to complete the port.

  • This process may take several business days.

  • Your gaining carrier will notify you when the number has successfully ported.

🧾 Key Terms

Letter of Authorization (LOA)
A signed document that authorizes the transfer (porting) of your fax number to a new provider.

Gaining Carrier
The company or service you are transferring your fax number to (e.g., a new fax provider or EMR system).

Billing Telephone Number (BTN)
The main phone number associated with your account. Carriers use this to validate your service details.

✅ Summary Checklist

  • Verify account details (company name, address, BTN, authorized user) with Updox

  • Request LOA form from gaining carrier

  • Fill out LOA completely and accurately

  • Have an authorized Updox user sign the form

  • Submit LOA following carrier’s instructions

  • Wait for confirmation of port completion

📞 Need Help?

For assistance at any step:

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