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recorded announcement to indicate when calls are placed in queue. In cases of severe <br />congestion and national need, network resources, such as trunks between local carriers <br />and GETS long distance carriers, may be reserved for GETS and NS /EP traffic use only. <br />GETS calls can wait in queue <br />here if Long Distance Carrier <br />F —IN <br />cannot accept call <br />trunks <br />� . Long Distance Carrier ► <br />Office or <br />Home <br />Phone <br />Figure 1. GETS Trunking <br />Exemption from Network Management Controls <br />The exemption from network management controls feature allows GETS calls to be <br />processed and avoid the restrictive measures that carriers use to protect their networks <br />during times of extreme congestion. When call volume exceeds the designed capacity of <br />the network, phone companies use network management controls to prevent a certain <br />percentage of calls from originating from, or terminating in congested areas. Though <br />normal calls may be blocked during the times these measures are implemented, GETS <br />calls are still processed. <br />Default Routing <br />If a technical problem in the local carrier prevents the call from receiving its full set of <br />special handling instructions during the initial setup stage of a GETS call, it will <br />automatically go to a GETS long distance carrier for processing. This provides a fail - <br />open operation where the call will at least be processed, as opposed to being blocked, <br />even if it does not receive all the priority features it normally would have. <br />5 <br />