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Features
 Synchronized Network
With the increased digitalization of communication resources, large groups of networks began to be formed, such as: telephony networks, non-switched data networks, switched data networks, etc…
The natural trend was for each group to take care of its own synchronism requirements, adopting individual and private solutions.
However, along with the growing need to interconnect telecommunications networks, problems regarding different synchronism standards began to appear. Whereas the interconnection required dedicated features and the speed rates were low, the problems were not severe. Nevertheless, with increasing speed rates and services entirely occupying the networks, the synchronism references became increasingly critical, demanding a unique reference for all networks.
To meet these new needs, Embratel developed the Synchronized Network, using the "master-slave” standard, defined as a "method for synchronizing 2 (two) or more switches, where one of them, called the master or reference switch, sends synchronism signals to the other switches on the network, which successively repeat this action. The slave switches contain hierarchies indicating external references for extracting the synchronism signal. In the event of failure in the highest priority reference, the switch is synchronized with the next possible reference in the hierarchy.”
Network Composition
Embratel's Synchronized Network is based upon the United States Defense Department's GPS (Global Positioning System) satellite system. This Network is made up of GPS receptors (Cesium precision standard) and SSU receptors (Synchronizing Supplementation Units).
Each SSU can have up to 5 output boards, which can provide 2 Mbps or 2 MHz signals, according to the type of board installed. The 2MHz ports are indicated for providing Synchronism Signals at short distances (up to 100 m), whereas the 2Mbps ports are indicated for greater distances.
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