Communication error occurred during the fax transmission

[Loretta26]

I have HP Envy Photo Fax 7855 I have been attempting to fax. The Error 321 states a communication error occurred during the fax transmission. I have used the HP test [content removed] has code error 344.  I contacted my provider to the landline phone and I was asked to contact HP provider.   Thank you! Help!

[Sneha_01]

Hi @Loretta26,

Welcome to HP Support Community.

Thank you for posting your query, I will be glad to help you.

The error code 344 on your HP Envy Photo Fax 7855 indicates that there was a communication error during the fax transmission. This error typically points to a line noise or interference issue. Here are some steps and considerations to help resolve the problem:

1. Check Phone Line Connection

Ensure Phone Line Quality:

• Verify that the phone line connected to your HP Envy Photo Fax 7855 is working properly.
• Check for any noise or static on the line, which can interfere with fax transmissions.

Use a Dedicated Line:

• If possible, connect the fax machine to a dedicated analog phone line without any splitters or other devices in between.

2. Disable Error Correction Mode (ECM)

1. Turn off ECM:
   • ECM is a feature that attempts to correct errors during fax transmission. Sometimes disabling ECM can help if you're experiencing persistent communication errors.
   • Navigate to the fax settings on your HP Envy Photo Fax 7855 and disable ECM if it’s enabled.

3. Check Fax Settings

1. Verify Fax Settings:
   • Double-check that the fax settings on your printer are configured correctly, including the fax number, country/region settings, and any dialing prefixes required to reach an outside line.

4. Perform Test Fax

1. Send Test Fax:
   • Send a test fax to a known working fax number to determine if the issue persists.
   • This helps isolate whether the problem is specific to certain recipients or a broader issue with your fax setup.

5. Contact Your Phone Service Provider

1. Discuss Line Quality:
   • Explain the error code 344 to your phone service provider and ask them to check the line quality and stability.
   • They can perform line tests and ensure there are no issues on their end that could affect fax transmissions.

6. Update Firmware

1. Check for Firmware Updates:
   • Visit the HP Support website and ensure your HP Envy Photo Fax 7855 has the latest firmware installed.
   • Firmware updates can sometimes resolve known issues and improve device performance.

I hope this helps.

Take care and have a good day.

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

Rachel571

HP Support