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How to Port Your Fax Line to Updox

Porting a fax number means transferring it from your current provider to Updox. Follow these steps carefully to ensure a smooth process. ⚠️ Warning: Do not discontinue your current fax service until Updox confirms the port is complete.

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Written by Lisabeth

Step 1: Complete the Letter of Authorization (LOA)

  • The Updox LOA form (updox-loa-v3.pdf) can be downloaded at the bottom of this page.

  • Each carrier or account number requires a separate LOA.

  • Local and toll-free numbers require separate LOAs.

  • Multiple toll-free numbers under the same carrier and account can use one LOA.

  • Toll-free numbers usually start with: 800, 888, 877, 866, 855, 844, 833.

💡 Tip: Ensure all information is legible—illegible forms may be returned.


Step 2: Authorize the LOA

  • The authorized account owner with your current carrier must sign the LOA.

  • Double-check spelling and account details to match your current carrier’s records.


Step 3: Provide Proof of Ownership

  • Include a recent billing statement showing the number(s) to port.

  • If the numbers aren’t listed, provide additional proof of ownership.


Step 4: Submit Your Request


What Happens Next

  • You will receive a confirmation email once your submission is received.

  • After verification, Updox will email your scheduled port completion date.

  • Once the port is complete:

    • The number will be added to your Updox account.

    • You can then contact your previous carrier to discontinue service.


Porting Rejections

  • Porting is regulated by the FCC.

  • All details must exactly match your current carrier’s records.

  • If rejected:

    • You’ll receive an email explaining why.

    • Submit a corrected LOA.

    • Processing restarts (up to 4–5 weeks).


Key Points to Remember

  • Transfer Time: up to 4–5 weeks after verification.

  • Do Not Cancel: Keep your current line active until Updox confirms the port.

  • 📞 Number Restrictions:

    • Some carriers block numbers from being ported.

    • Updox may not support certain area codes/prefixes. Confirm with both carriers.

  • Service Impact: After porting:

    • Office fax machines using the number will stop working.

    • Any devices sharing the line (internet, credit card readers) will no longer function. Check with your provider if this applies.


Tip: Carefully review all details and keep LOAs legible to avoid delays.


For more information please visit our Knowledge Base!

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