The Konexx Mobile Konnector provides analog connectivity over virtually any office or hotel digital phone system. It is perfect for the mobile worker and the world traveler.??This compact handset-interface product enables analog fax/modems to connect with any telephone that has a modular handset. Two internal 9v batteries power the Konexx Mobile Konnector, making it ideal for field use. It is compatible with virtually all fax/modems. It has a four-position switch that enables V.90 operation with almost all brands of telephones. An AC adapter is included as an alternate power source.