Arrangement for providing a call-connection service

Telephonic communications – Plural exchange network or interconnection – With interexchange network routing

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Details

379230, 379224, H04M 714

Patent

active

RE0345296

ABSTRACT:
In a private communication network (10) served by a provider of call interconnection services, e.g., a carrier service node (15), the number of trunks (50-52) used within a call path is reduced without affecting the private nature of the private network. The service provider serves customer calls by means of a service node controller (SNC 40)--a switch such as a PBX. The SNC directly interconnects trunks (50,51) that connect it with a call-source and a call-destination node (20,21) of the customer, without routing the call through the customer's tandem node (24). The SNC merely queries the customer's tandem node over a control link (53), such as an ISDN D channel, to obtain requisite call-routing information from the customer's database (60). The customer retains ownership and control of the tandem node and its database, thereby preserving the private nature of the private network.

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G. A. Raack et al., "Customer Control of Network Services", IEEE Communications Magazine, vol. 22, No. 10, (Oct. 1984) pp. 8-14.
F. Weismiller, "Direct Services Dialing", Proceedings-IEEE Military Communications Conference, IEEE, New York, N.Y., vol. 2 (1983) pp. 365-369.
P. K. Giloth, "Planning for Attractive New Network Services", Pacific Computer Communications '85, K. H. Kim et al., ed., Elsevier Science Publishers B.V. (North-Holland) (1986) pp. 187-193.

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