Call Management and Cost Control: A Handbook for Telephone

Format: Spiral-bound

Language: English

Format: PDF / Kindle / ePub

Size: 9.71 MB

Downloadable formats: PDF

Select courses that are worth at least 37 EC. 2nd edition. Such areas, or islands, can then be interlinked to provide a wider area of coverage. The global implementation of digital telecommunications equipment has enabled the merger of the traditional telecommunications network designed for voice communications with data communications (computer information transfer). This---------(to know) as multi-frequency dialling. Of course, the cost is less for the two-fiber ring installation, but not one half of the cost, making the fourfiber ring more cost-effective for large traffic volumes. 500 Chapter Nine R R T R T R A Through traffic path R R R T T R C T R T R T R T D T BREAK IN FIBER CABLE R T R (a) T R T R R T R T B R Through traffic path A R T C R T PROTECTION RINGS D R T R T BREAK IN FIBER CABLE T R T R IN-SERVICE RINGS Figure 9.15 SONET/SDH ring topologies. (a) Unidirectional path-protected ring; (b) dual (b) bidirectional line-protected rings.

Pages: 178

Publisher: Rodgers Consultancy Services (November 1992)

ISBN: 0952023504

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