Arrangement for providing a call-connection service

Details Arrangement for providing a call-connection service Arrangement for providing a call-connection service

1989-03-29

1990-01-23

Dwyer, James L.

Telephonic communications

Plural exchange network or interconnection

With interexchange network routing

379230, 379224, H04M 714

Patent

active

048963500

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.

REFERENCES:
patent: 4191860 (1980-03-01), Weber
patent: 4802199 (1989-01-01), Lange et al.

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