Key Features:

• Adtran 1202086L3 ISU 512 S/T-Interface
• An ISDN network termination device that terminates four ISDN BRI U-interfaces and provides V.35 and EIA-530 DTE serial interfaces.
• High-speed Inverse Multiplexer for ISDN applications including videoconferencing and audio broadcasting
• Synchronous data transfer from 56 kbps to 512 kbps
• BONDING Mode 1 protocol support for aggregating 64 kbps B-Channels
• Dialing via front panel, stored numbers, DTR assertion, AT commands, V.25 bis, or RS-366
• Switch type support includes National ISDN-1, Lucent 5ESS, Nortel DMS-100 and NEC