AUTOMATIC PROTECTION OF DROP & INSERT T1 LINES
Original Publication Date: 1993-Jun-01
Included in the Prior Art Database: 2002-Feb-13
Drop & insert Tl distribution is a cost effective method of implementing a digital communications net- work between multiple sites where the tratlic is too low to warrant a network of dedicated Tl's between each site. In a drop & insert system, a single Tl is used to interconnect multiple sites, but only a handful of chan- nels are dropped at a particular site. The remaining chan- nels are passed through to subsequent sites. Outbound information is inserted into the time slots which were dropped. Figure 1 shows a fully interconnected topol- ogy usmg dedicated communication links between each site versus the topology of a system using a Drop/Insert scheme.