Page 1304 of 1814 Network Attendant Service553-2901-301 Standard 9.00 January 2002Network Attendant Service scheduleThe NAS schedule allows a prioritized list of attendant alternatives (attendantlocations) to be defined for up to 31 half-hour time periods. Each period canhave up to four alternate attendants defined against it. During one of thesetime periods, a request for attendant service will use one of the alternatives,according to the specified order - the first attendant alternate is attempted, andif all attendants are in Position Busy, the following alternate in the sequenceis attempted, and so on.If none of the attendant alternatives are available, an attempt is made to givelocal attendant service, which may lead to the application of local NIGHTservice.Night ServiceNight Service treatment is defined individually for each node.With the introduction of NAS routing, identifying whether or not a system isin Night Service becomes more complex. Table 87 shows when NightService treatment is in effect. When all the conditions in a vertical column aremet, the system is considered to be in Night Service.Status of local attendantsWhen NAS routing is active and there is an available attendant at the localswitch, the call terminates at the local attendant, if one is available. If a localattendant is not available, the call may either be placed in the local attendantqueue (if the Call Waiting threshold has not been exceeded and the consoleCall Waiting lamp is not flashing), or may receive local NIGHT service.Table 87Determination of Night ServiceLocal Attendants exist No No No Yes Yes YesLocal Night active Yes Yes YesNAS key active No Yes Yes No Yes YesNo alternatives in current NAS schedule Yes YesAll alternatives in current NAS schedule tried Yes Yes
