Telephonic communications – Plural exchange network or interconnection – Connection call model
Patent
1991-01-03
1993-09-28
Dwyer, James L.
Telephonic communications
Plural exchange network or interconnection
Connection call model
379 45, 379113, 379207, 379266, 379309, H04M 700, H04M 1104, H04M 1500, H04M 342
Patent
active
052492230
ABSTRACT:
A call-load control arrangement for a first call-answering center, such as an E911 service PSAP, causes calls destined for the first center and not yet routed thereto to be rerouted by a central office from the central office directly to a second, alternate, call-answering center while the first center is in call overload. A function monitors current parameters of call-answering performance of the first center and periodically compares them against predetermined criteria of acceptable call-answering performance to determine whether call overload exists. In the E911 service PSAP, the function automatically closes and opens a switch to activate and deactivate the "night-service" or "trunk make-busy" link to cause the central office respectively to reroute calls away from, or to route calls to, the PSAP.
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AT&T Bell Laboratories
Dwyer James L.
Hong Harry S.
Volejnicek David
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