Telephonic communications – Special services – Service trigger
Patent
1996-03-12
1997-05-27
Zele, Krista M.
Telephonic communications
Special services
Service trigger
379220, H04M 710
Patent
active
056339216
ABSTRACT:
Special subscriber services are implemented by providing operator functionality and service logic within a transit exchange to equip it as a serving node. A subscriber connected to an end office coupled to the transmit exchange invokes the special services functionality by signalling such as by means of a long switch hook flash. Once invoked particular special services may be selected by DTMF or voice prompt signalling.
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Presson Thomas F.
Telefonaktiebolaget LM Ericsson
Zele Krista M.
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