公开(公告)号：US07103322B2

公开(公告)日：2006-09-05

申请号：US09971413

申请日：2001-10-05

Applicant: David Eric Jones ,  Jason N. Morgan ,  Stacy Morris Murphree ,  Jason Ted Brock

Inventor： David Eric Jones ,  Jason N. Morgan ,  Stacy Morris Murphree ,  Jason Ted Brock

IPC: H04B1/17 ,  H04B1/38 ,  H04B17/00 ,  H04Q7/20

CPC classification number: H04L43/00 ,  H04L43/0817 ,  H04M3/005 ,  H04M3/10 ,  H04M3/12 ,  H04M19/00 ,  H04Q1/028

Abstract: A (DS3) network interface unit (NIU) by-pass architecture places the NIU on its own circuit card and exclusive of by-pass switching (and relay) components, which are installed in the equipment shelf, proper, so that physical removal of the NIU card will leave the by-pass circuitry intact. The by-pass circuit responds to an abnormality of the NIU card, such as malfunction or physical removal of the NIU from its card slot, and also to a power supply failure. It also contains an indicator to draw attention to a failed NIU, increasing the likelihood that someone will notice a damaged card.