HP LaserJet Enterprise M4555 MFP series - Manual (Page 254)

Are you using a phone company voice-messaging service or an answering
machine?
If the rings-to-answer setting for the messaging service is lower than the rings-to-answer setting for the
fax accessory, the messaging service answers the call, and the fax accessory is not able to receive
faxes. If the rings-to-answer setting for the fax accessory is lower than that of the messaging service, the
fax accessory answers all calls, and no calls are routed to the messaging service.
Does your phone line have a call-waiting feature?
If the fax telephone line has an activated call-waiting feature, a call-waiting notice can interrupt a fax
call in progress, which causes a communication error. Ensure that a call-waiting feature is not active on
the fax telephone line.
Check fax accessory status
If the analog-fax accessory does not appear to be functioning, print a Configuration Page report to
check the status.
1. From the Home screen, scroll to and touch the Administration button.
2. Open the following menus:
● Reports
● Configuration/Status Pages
● Configuration Page
3. Touch the Print button to print the report, or touch the View button to view the report on the screen.
The report consists of several pages.
NOTE: The product IP address or host name is listed on the Jetdirect Page.
On the Fax Accessory Page of the Configuration Page, under the Hardware Information heading,
check the Modem Status. The following table identifies the status conditions and possible solutions.
Operational / Enabled 1 The analog-fax accessory is installed and ready.
Operational / Disabled 1 The fax accessory is installed and operational, however,
HP Digital Sending utility has either disabled the product fax
feature or has enabled LAN fax. When LAN fax is enabled,
the analog-fax feature is disabled. Only one fax feature, either
LAN fax or analog fax, can be enabled at a time.
Non-Operational / Enabled/Disabled 1 A firmware failure has been identified. The firmware should
be updated.
Damaged / Enabled/Disabled 1 Fax accessory has failed; reseat the fax accessory card and
check for bent pins. If the status is still DAMAGED, replace the
analog-fax accessory card.
1 ENABLED indicates that the analog fax accessory is enabled, turned on; DISABLED indicates that LAN fax is enabled (analog
fax is turned off).
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