HP Color LaserJet Enterprise CM4540 MFP series - Manual (Page 236)

Set redial-on-no-answer
The redial-on-no-answer setting selects the number of times the fax accessory redials if the number
dialed does not answer. The number of retries is either 0 to 1 (used in the U.S.) or 0 to 2, depending
on the country/region setting. The interval between retries is set by the redial interval setting.
1. From the Home screen, scroll to and touch the Administration button.
2. Open the following menus:
● Fax Settings
● Fax Send Settings
● Fax Send Setup
● Fax Dialing Settings
3. Touch the Redial On No Answer text box to display the keypad.
4. Enter a value (0–2, default is 0) and then touch the OK button.
5. Touch the Save button.
Set the dial tone detection
The detect dial tone setting determines whether the fax checks for a dial tone before sending a fax.
1. From the Home screen, scroll to and touch the Administration button.
2. Open the following menus:
● Fax Settings
● Fax Send Settings
● Fax Send Setup
● Fax Dialing Settings
3. Touch the Detect Dial Tone setting; a checkmark appears next to the Detect Dial Tone setting when
selected. The default setting is unchecked (disabled).
4. Touch the Save button to enable dial tone detection.
Set a dialing prefix (if required)
The dialing prefix setting allows you to enter a prefix number (such as a "9" to access an outside line)
when dialing. This prefix number is automatically added to all phone numbers when dialed.
216 Chapter 12 Fax ENWW