Original Date: 09/15/1997
Revision Date: 01/18/2007
Information : Broadband Network
During the process of analyzing TEAD’s data and communication network with the intent to acquire Internet access capability, it was determined that the system in use at that time was not capable of providing a graphical user interface. This system, installed during 1985 to 1986, was a TRW network that was no longer supported by this supplier. The system was only capable of text (ASCII) transmission/reception at 19.2 baud (19,200 bits per second). However, the Depot did have a dual broadband frequency modulated cable television internetwork available that would transmit and receive video data on separate cables. This could be adapted for fast ethernet transmission, allowing for video transmission (Internet).
Due to funding constraints that prevented the procurement and installation of a new ethernet network, the decision was made to modify the existing network hardware. The addition of a dial-in Ethernet Network Device, a 16-bit slot hub chassis, and an RF-Networks "Ethernet on Broadband MODEM" allowed the system to use Windows-based applications such as cc:mail, World Wide Web browsers, File Transfer Protocol transmission/reception, Website development, etc. A comparison of the network before and after modification is shown in Figure 2-1. The Operating System used is Windows New Technology with Windows 95 client software.
The cost of the modification was $36 thousand, while the cost of a new infrastructure would have been $391,352. A savings of $355,352 was achieved.
Figure 2-1. Broadband Network Reuse: Before and After
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