Telephonic communications – Plural exchange network or interconnection – Connection call model
Patent
1987-06-22
1989-01-31
Dwyer, James L.
Telephonic communications
Plural exchange network or interconnection
Connection call model
379216, H04M 127, H04M 342
Patent
active
048021997
ABSTRACT:
A communication system is arranged to provide a virtual private line facility connection to another communication system using the public switched network. In response to a predetermined signal preceding a called party dialing signal received from a user, the system accesses a virtual facility table to obtain an intersystem dialing signal necessary to establish a connection to an access line of the other communication system. The system sends the intersystem dialing signal followed by the called party dialing signal to the public switched network. The intersystem dialing signal establishes a connection to the other system which then uses the received called party dialing signal to establish a connection from that system to the called party. The virtual facility table is made accessible to speed dialing, repertory dialing, station message detail recording and automatic route selection features of the system.
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L. G. Anderson & P. F. Lambert, "Modifying No. 1 ESS for Enhanced Private Network Service", Bell Laboratories Record, Feb. 1979, pp. 46-52.
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Lange Michael D.
Smith Nicholas K.
Willems Carl
American Telephone and Telegraph Company
AT&T Information Systems Inc.
Caccuro John A.
Dwyer James L.
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