# Configuring Fax Applications

When NuPoint UM attempts to send a fax and encounters a busy line or a Ring-No-Answer (RNA) condition, it refers to the limits values set in the LCOS of the sending mailbox. You can configure the number of retries and the interval between retries. You can also limit the length of telephone number that can be faxed.

IMPORTANT!

- When faxes are sent using the TUI, settings must be configured in the Fax Limits menu.

- When faxes are sent using the Fax Printer Driver or Web View, settings must be configured in the Call Placement limits menu.

The TUI settings are set by default to try to send a fax once. If the fax fails, NuPoint UM will retry one more time after one minute has elapsed. If the retry fails, the system creates a fax receipt to notify you of the failure.

When using the Fax Printer Driver or Web View, the "RNA retry" default setting causes NuPoint to retry the fax 10 times at 60-minute intervals. (Note that in this case, a failure to send the fax will not provide a fax receipt for approximately 10 hours.) The "Busy retry" default setting causes NuPoint UM to retry up to 10 times at 10-minute intervals. The "Message Phone Length" parameter limits the length of the fax number you can dial. You can adjust these values as required.

To make the Fax Printer/Web View defaults the same as the TUI defaults (1 retry after 1 minute):

- Customize an LCOS to include the following Call Placement limits/settings:

  - RNA retry limit: 1

  - RNA retry interval: 1

  - Busy Retry limit: 1

  - RNA retry interval: 1

Note:

- If necessary, you can adjust the RNA and Busy retry limits if you want the fax to make more than one retry before failing.

- If the fax transmission itself fails (for example, fax machine error/power failure), NuPoint treats the fax attempt as a Ring No Answer.