HP LaserJet Pro CM1415 HP LaserJet Pro CM1410 - User Guide - Page 166
ISDN, Use fax on a VoIP service, Fax memory
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ISDN 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 an ISDN environment, it might be necessary to contact the ISDN provider for assistance. HP does not guarantee that the product will be compatible with ISDN digital environments or digital-to-analog converters. Use fax on a VoIP service 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 the VoIP provider offers a "Pass through" mode for the connection, that will offer better fax performance on VoIP. Also if the provider has "comfort noise" added to the line, fax performance can be enhanced if this feature is not enabled. If faxing problems continue, contact the VoIP provider. Fax memory Fax memory contents are retained when there is a loss of power The flash memory protects against data loss when a power failure occurs. Other fax devices store fax pages in either normal RAM or short-term RAM. Normal RAM immediately loses data when power is lost, while short-term RAM loses data about 60 minutes after a power failure occurs. Flash memory can maintain its data for years without power applied. Send a fax Fax from the flatbed scanner 1. Place the document face-down on the scanner glass. 2. From the Home screen, touch the Fax button. 3. Use the keypad to type the fax number. 150 Chapter 11 Fax ENWW