Method of establishing a connection as well as an exchange, serv

Details Method of establishing a connection as well as an exchange, serv Method of establishing a connection as well as an exchange, serv

1997-05-22

1999-07-20

Smith, Creighton

Telephonic communications

Plural exchange network or interconnection

Connection call model

379219, 379211, H04M 700

Patent

active

059265361

ABSTRACT:
A requesting terminal signals a call request (CALL) to a control unit of a first communications network. The control unit then determines whether sufficient capacity is available in the first communications network to establish the connection requested by the call request. In the event of insufficient capacity, the control unit transmits an overload message (DAT) to the requesting terminal. It only initiates an alternative establishment of the requested connection via another, second communications network after it receives an acknowledge message (ACK) issued by the requesting terminal.

REFERENCES:
patent: 5490212 (1996-02-01), Lautenschlager
patent: 5705998 (1998-01-01), Stampfl
patent: 5784450 (1998-07-01), Stahl
"Vernetzte TK-Anlagen ohne Grenzen", H. Dehlen, ntz, vol. 45 (1992), No. 9, pp. 714-720, No Translation.

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