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Physical layer impairments, in Wavelength-Division Multiplexing (WDM) transparent networks, deteriorate the analog signal quality when it progresses from its source node to its destination node. Thus, the lightpaths' Quality of Transmission (QoT) might become potentially unacceptable. Such degradation has a severe impact on the performance of long-haul transmission transparent optical networks in...
Disasters may cause large-area failures in high-capacity telecom networks, leading to huge data loss. Survivable service provisioning is crucial to minimize the effects of network / datacenter failures and maintain critical services in case of a disaster. We propose a novel disaster-aware service-provisioning scheme that multiplexes service over multiple paths destined to multiple servers/datacenters...
The ability to provide critical communications, particularly during disasters, is essential for national security and emergency preparedness (NS/EP). The authors present a quantitative study of the resilience of IP-based NS/EP services for the National Communications System (NCS). This analysis builds on a previous study of the survivability of a single carrierpsilas telecommunications network by...
The ACTS project OPEN will assess, by means of network analysis, laboratory demonstrations, and two cross-border field trials, the concept of a pan-European network with a high-level of optical transparency, using all-optical WDM technologies for transmission and routing.
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