Growing Vulnerability of the Public Switched Networks Implications for National Security Emergency Preparedness (1989) / Chapter Skim
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6 Competition
6 Competition
Pages 67-79
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From page 67... ...
For purposes of the committee's analysis of the impact of competition on public network NSEP, it is useful to distinguish between seven categories of telecommunications and information services. This chapter discusses providers of exchange service (local and interexchange)
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From page 68... ...
Fiber MANs and WANs link business firms within the same urban area and can also bypass public network facilities. Already, according to documents filed with the Federal Communications Commission (FCC)
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From page 69... ...
This point is not intended to denigrate the value of super systems; they do provide valuable service to small areas that would otherwise lack cellular service. Despite these limitations, cellular radio can significantly augment public network NSEP capabilities by offering some level of redundancy in the local loop.
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From page 70... ...
The introduction of myriad types of CPE stimulated regulatory relocation of network interfaces to facilitate customer control of network functions and ease interconnection (Sugrue and Cimko, 1988~. As basic transport of the integrated services digital network (ISDN)
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From page 71... ...
Customers are free to interconnect the equipment of their choice to the network, without even notifying the telephone companies. Further, the proliferation of interfaces between the customer's premises and the public and private networks will complicate loop testing and billing verification.
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From page 72... ...
But if a proliferation of nonstandard architectures prevails, for want of interoperability their overall value may be minimal for NSEP redundancy, and thus private operators of VANs may will only be able to provide limited backup to public users in emergencies. DATABASES Background Electronic software databases now represent a voluminous repository of information service database access.
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From page 73... ...
One regulatory issue is whether telephone companies will be allowed to provide video service to their exchange subscribers, and whether if allowed to do so they will be permitted to offer video programming as well as dial tone. Today, there is only a little fiber in the cable television plant, and that is used for long trunk routes using analog modulation.
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From page 74... ...
Ultimately, if broadband switching is deployed by exchange carriers, they will be able to offer switched video services that cable television companies cannot offer with their tree and branch architecture. National Security Emergency Preparedness Implications Cable television, if delivered via optical fiber, could eventually largely supplant traditional methods of television transmission, though probably not until some point in the twenty-first century.
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From page 75... ...
By contrast, competition induces competing companies to trim costs, especially in businesses with the narrow profit margins typical of many competitive telecommunications markets. In some regards, the multiple competitive networks that have come into existence will provide backup for one another.
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From page 76... ...
Both the public networks and most private networks are in constant states of change, with database updates constantly occurring. Uniess live traffic is routinely being sent over such gateways, the confidence factor that a standby capability is available will not be high.
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From page 77... ...
VANs are often driven by premises-based network control intelligence, and thus oiler valuable network routing capabilities if interconnected with the public switched networks. Such signaling capability is superbly suited to alternate routing schemes: Packet switching was originally designed to enable adaptive routing through damaged networks.
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From page 78... ...
Premises-network interconnections, private network to public network connection, and private network interconnection all have gateway offerings that provide limited conversion capabilities. This appears to be an acceptable migratory step in the standards development process.
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From page 79... ...
the rate of return. Present~tlon to the Committee on Revlew of Sw~chlog' Synchronlz~tlon and Network Control in N~t~n~1 Security l~lecommunlc~tlons' V~hlogton, D.C.,\~rcb 15.
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