FeaturesAT&T’s ISDN voice terminals, with the addition of the ADM, provide you with simultaneous voice and data communications capabilities in one unit. As a telephone, the ISDN voice terminal offers programmable buttons, fixed feature buttons, and a message indicator. The addition of the ADM allows attached data terminals or personal computers to send and receive data through an ISDN network.Asynchronous full-duplex operation at data rates from 1200 bits per second (bps) to 57.6 kilobits per second (kbps) through an EIA-232-D interface.X.25 packet switched data communication including receipt of X.29 commands from a remote X.25 host for setting packet switched data parameters.Circuit switched data communication over 56 or 64 kbps facilities via industry standard V.120 rate adaption protocol.Circuit switched data communication over 64 kbps facilities via AT&T’s Digital Multiplexed Interface (DMI) Mode 2 or Mode 3 rate adaption protocols.A user friendly command interface with on-screen help, nine programmable named data memory numbers, and four programmable data option profiles.A standard AT command set interface for compatibility with applications which require this command format.Remote and local loopback tests.Includes RefurbishedLibrary ISDN _Installation_and_Test_Manual ISDN 7505 7506 7507 Terminals Users Guide ATT ISDN 7506 7507 User Manual
