The following list summarizes the key points that were discussed in this chapter:
■ Calling privileges are configured to implement class of service (CoS) or special applications that require calls to be treated differently depending on the caller.
■ Partitions are groups of called numbers with identical reachability characteristics. Calling search spaces (CSS) are lists of partitions that the owner of the CSS has access to.
■ Time schedules and time periods are used to activate or deactivate partitions within a CSS depending on time or date information.
■ Client matter codes (CMC) are used to track calls to certain clients by requesting the CMC to be entered and adding it into call details records (CDR). Forced authorization codes (FAC) are used to allow access to route patterns only if an authorization code with a high-enough level is entered when requested.
■ Calling-privileges applications include implementation of CoS, vanity numbers, time-based route or carrier selection, and PLAR.
■ Complexity of CoS implementation at IP phones can be reduced by using the linedevice approach, which allows the effective CSS to be composed of a line and device CSS (in this order).
■ Vanity numbers provide access to local services by dialing the same number from any physical location.
■ Time schedules and time periods can be used to route calls via different gateways or carriers depending on the time of the day or date to take advantage of the cheapest rate at any time.
■ PLAR, a function where a phone is automatically connected to a predefined number when it goes off-hook, is implemented by using null-string translation patterns, partitions, and CSS.
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