HP CM1312 MFP Series - Manual (Page 139)

PBX
The product is an analog device that is not compatible in all digital phone environments. Digital-to-analog
filters or converters may be needed for faxing functionality. If faxing issues occur in a PBX environment,
it might be necessary to contact the PBX provider for assistance. HP does not guarantee that the product
will be compatible with digital environments or digital-to-analog converters.
Contact the PBX provider for more information and for assistance.
ISDN
Contact the ISDN provider for more information and for assistance.
VoIP
Voice over internet protocol (VoIP) services are often not compatible with fax machines unless the
provider explicitly states that it supports fax over IP services.
If the product experiences problems getting a fax to work on a VoIP network, verify that all cables and
settings are correct. Decreasing the fax-speed setting might allow the product to send a fax over a VoIP
network.
If faxing problems continue, contact the VoIP provider.
Send a fax
Fax from the flatbed scanner
1. Make sure that the automatic document feeder (ADF) contains no media.
2. Lift the flatbed scanner cover.
3. Place the original document face-down on the flatbed scanner with the upper-left corner of the
document at the corner indicated by the icon on the scanner.
4. Gently close the lid.
5. Use the alphanumeric buttons on the control panel to dial the number.
-or-
If the fax number you are calling has been assigned to a one-touch key, press that key.
-or-
ENWW Use fax 127