Functioning as the intelligence behind the information flow, the ADTRAN Operating System (OS) makes quick and responsive IP routing decisions. The ADTRAN OS supports static and default routes, and allows for fast, accurate network convergence supporting routing protocols like RIP version 1 and version 2. From a management perspective all the NetVanta 3000 Series are centrally managed using the Command Line Interface (CLI). ADTRAN’s CLI mimics the industry defacto standard eliminating any re-training cost, and requires no costly industry certification courses. The versatile NetVanta 3000 Series is a complete turnkey solution with unsurpassed performance for customers requiring wide area connectivity. The NetVanta 3000 Series can effortlessly merge into an existing network with other brand name routers without disrupting day-to-day networking operations. In addition, these products are backed by an industry-leading 5-year warranty and ADTRAN’s world-class 24-hour technical support.

As the diagram indicates, the corporate site houses a NetVanta 3205 connecting a full T1 to a public Frame Relay network. This connection requires a T1/FT1 with DSX-1 NIM to carry digital voice and data, and it also includes an ISDN BRI DIM for added disaster recovery security. At the first branch office the NetVanta 3200 is equipped with a T1/FT1 NIM and terminates a fractional T1 for data applications. A 64K line is terminated at the second office using a NetVanta 3205 that includes a 56/64K NIM. At the third branch office, a full T1 is needed to carry both digital voice and data traffic, therefore requires a NetVanta 3200 equipped with both a NIM and a DIM. A T1/FT1 with DSX-1 NIM is used to terminate the T1 and the DSX-1 interface is used to drop-off the digital voice to a local PBX. If the primary link is compromised, ADTRAN’s Safe-T-Net™disaster recovery solution will dial around the failed network using the ISDN BRI DIM, allowing for guaranteed bandwidth for mission critical applications like digital voice.