METHOD FOR MANAGING SUBSCRIBER IN LINE LOCK OUT IN FULL ELECTRONIC EXCHANGE

PURPOSE: A method for handling a subscriber of a line lock out state in a full electronic exchange is provided to supply an incoming signal tone to an incoming subscriber when an originating subscriber attempts a call to the incoming subscriber of the line lock out state, so as to recover a communic...

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1. Verfasser: KO, GWANG SEOP
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:PURPOSE: A method for handling a subscriber of a line lock out state in a full electronic exchange is provided to supply an incoming signal tone to an incoming subscriber when an originating subscriber attempts a call to the incoming subscriber of the line lock out state, so as to recover a communication available state from the line lock out state. CONSTITUTION: If an originating subscriber requests incoming occupation(S201), an analog subscriber controller requests number translation to an NTR(Number TRanslation) unit(S202). Whether a howling tone is delivered to notify a line lock out state to an incoming subscriber is decided(S203). If so, the analog subscriber controller ends a set howling tone timer and suspends the howling tone by using an LSL(Local Switching system Library)(S211), and requests codec connection to an ASI(Analog Subscriber Interface)(S212). The analog subscriber controller notifies switch connection to the analog subscriber controller(S213). The analog subscriber controller delivers an incoming howling tone to the incoming subscriber, and a ring-back tone to the originating subscriber(S214). If a howling tone is not delivered in the step S203, the analog subscriber controller requests DLC(Data Link Concentration) allocation to the ASI(S221), and progresses to the step S212. 본 발명은 발신 가입자가 라인 락 아웃 상태의 가입자에게 착신을 시도할 때 착신 가입자에게는 착신링과는 별도의 착신 신호음을 제공하고 발신 가입자에게는 착신이 되었다는 상태를 알리는 착신음을 제공한다. 착신 가입자가 착신 신호음을 듣고 훅 플래시 응답을 하면 착신 신호음 및 착신음을 절단하고 통화로를 연결하여 정상 통화가 가능하게 한다. 또는 착신 가입자가 착신 신호음을 듣고 훅 온 응답을 하면 착신 신호음을 절단하고 착신 가입자 측으로 착신을 알리는 착신링을 제공한다. 착신링을 수신한 착신 가입자가 이에 응답하면 정상 통화가 가능해진다.