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What Is Call Simulation? Call simulation is a methodology that simulates the switch routing, charging and recording logic of a phone call through the translation tables of a CO switch. This technique permits off-line testing by imitating the logic of the switch and applying it to a captured image of the translation tables. Since simulated calls are not placed on the network, large volumes of calls are tested rapidly and inexpensively, without burdening the switch or CO facilities. Simulated dialing allows for almost immediate availability of results. Another key factor is coverage. Under this approach, 100 percent of the switch translations are validated. Not only does simulated testing identify problems with working or active codes (i.e. NPA, NXX or line class codes), but it also identifies potential issues for codes that may be vacant or inactive. Another advantage is that simulation testing can be used pro actively, before a switch goes "live." Call simulation software can also be useful as a training tool for switch translators.
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