Telephonic communications – Plural exchange network or interconnection – Connection call model
Patent
1995-06-29
1997-05-06
Zele, Krista M.
Telephonic communications
Plural exchange network or interconnection
Connection call model
370217, 379273, H04M 700, H04M 300, H04J 116, H04J 314
Patent
active
056278896
ABSTRACT:
A technique is provided for re-routing telecommunications traffic that is originally destined for passage between an inter-exchange carrier, via a first gateway POP (18) at a first local exchange (12.sub.1), and a second local exchange (12.sub.5) that is dead-ended because of a single local trunk (16) coupling it to the first exchange. Such re-routing is accomplished, in the event of a failure of the local trunk (16), by providing an optical switch (24) at the dead-ended local exchange (12.sub.5) for routing traffic onto and off an express traffic link (20) passing through the exchange between the first gateway POP (18) and a second gateway POP (18) of the inter-exchange carrier. In this way, traffic can be routed by the inter-exchange carrier, via its second gateway POP (18), to and from the dead-ended local exchange (12.sub.5) without the need to physically restore the failed local trunk (16).
REFERENCES:
patent: 3864533 (1975-02-01), Erlund
patent: 5182744 (1993-01-01), Askew et al.
patent: 5193086 (1993-03-01), Satomi et al.
patent: 5465294 (1995-11-01), Chapman, Jr. et al.
AT&T
Hong Harry S.
Levy Robert B.
Zele Krista M.
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