Convergence Switching and the Next-Generation Carrier

A true b false see topic 2 5 at present voice service

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Unformatted text preview: International Engineering Consortium 10/14 4. Today’s TDM PSTN was designed to accommodate a single application. a. true b. false See Topic 2. 5. At present, voice service revenues constitute _______ percent of service providers’ net revenues. a. 20 b. 40 c. 60 d. 80 See Topic 2. 6. At present, which of the following is used to accommodate voice applications? a. the PSTN b. ATM networks See Topic 3. 7. An ATM–based tandem switch can be built for a small fraction of the cost per port of a traditional TDM–based switch. a. true b. false See Topic 4. 8. To support all of the voice features to which readers are accustomed, convergence switching solutions need not include full-featured SS7 support nor fully interoperate with the existing PSTN infrastructure. a. true b. false See Topic 4. Web ProForum Tutorials http://www.iec.org Copyright © The International Engineering Consortium 11/14 9. Converged switching architecture is characterized by all but which of the following? a. telephony-grade reliability b. scalability of port count and SS7 signaling power c. partial SS7 signaling power d. open architecture for rapid, simplified service deployment See Topic 4. 10. An ATM–based converged switching solution forwards both voice and data traffic from DSLAMs, integrated access devices, and service access multiplexers to the PSTN, the Internet, and other data networks by using DACSs and other TDM equipment. a. true b. false See Topic 5. Glossary access tandem a tandem switch that is used to interconnect between carriers for equal access; typically, this used to interconnect ILECs with IXCs, but now also includes CLECs ATM asynchronous transfer mode; an international standard for high-speed broadband CBR constant bit rate class-4 office a switching center for toll calls; a class-4 office switches toll traffic originating at class-5 offices to other class-4 offices, or offices of a higher class; in addition, a class-4 office relays toll traffic from class-4 toll offices to the class-5 end office serving the destination address class-5 office the lowest level in a hierarchy of central offices; class 5 offices serve as...
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This note was uploaded on 10/15/2011 for the course ECON 1102 taught by Professor Jahis during the Spring '09 term at University of Minnesota Crookston.

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