ADTRAN 1200186L1 ATLAS 128 KBPS ISDN TERMINAL ADAPTER

Atlas includes advanced access architecture for switching dial-up calls to specific ports or DS0s. The Octal Basic Rate ISDN (BRI) Module contains eight ISDN U-interfaces and combines with other Atlas components to implement an ISDN access switch. The Octal BRI Module can connect to the ISDN network (NT mode), or it can emulate the ISDN network to other ISDN access devices (LT mode) that support the U Interface, such as terminal adapters and network termination units. As a component in an Atlas access switching application, the Octal BRI Module can consolidate multiple Basic Rate ISDN (BRI) connections onto T1/PRI access lines. The module also supports BRI-to-BRI, BRI-to-PRI, and PRI-to-PRI switching. In addition, Atlas converts between ISDN D channel (PRI or BRI) and T1 robbed bit signaling, allowing non-ISDN equipment to access a more efficient PRI or BRI facility. Moreover, the modules call filtering feature allows you to program on a per-user basis, the call types that will be answered and originated.