Arrangement for multiple custom calling

Details Arrangement for multiple custom calling Arrangement for multiple custom calling

1981-10-29

1984-04-24

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

179 18B, 179 18BC, H04Q 1104

Patent

active

044452110

ABSTRACT:
The arrangement described herein provides for simple control and minimal program impact of a central office switching system for interfacing multiple custom calls. This arrangement employs a few simple trunks connected in a loop around configuration. The arrangement shown considers the connection of a three way calling subscriber to a call waiting subscriber who is actively engaged in a prior telephone call.

REFERENCES:
patent: 3504123 (1970-03-01), Fischer et al.
patent: 3517135 (1970-06-01), Fisch et al.
patent: 3967070 (1976-06-01), Srivastava et al.
patent: 3997731 (1976-12-01), Wilmot et al.
"ITT 1240 Digital Exchange", by J. M. Cotton, Electrical Communication, vol. 54, No. 3, 1979, pp. 215-224.

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