Control apparatus for switching station connections using a hold

Details Control apparatus for switching station connections using a hold Control apparatus for switching station connections using a hold

1994-07-05

1997-02-11

Matar, Ahmad F.

Telephonic communications

Special services

Call diversion

379201, 379393, 379266, H04M 358

Patent

active

056029101

ABSTRACT:
In a call transfer apparatus wherein a request to transfer a call between first and second communication partners from the second communication partner to a transfer destination is made, a discriminating circuit discriminates whether the transfer destination can respond. A control unit places the first communication partner in a holding state while it is determined whether the transfer destination can respond. If the transfer destination can respond, the call is transferred. If speech communication with the transfer destination is not possible, the control unit releases the holding state of the first communication partner.

REFERENCES:
patent: 3936615 (1976-02-01), Pommerening
patent: 4125748 (1978-11-01), Nahabedian et al.
patent: 4723273 (1988-02-01), Diesel et al.
patent: 4809321 (1989-02-01), Morganstein
patent: 4953204 (1990-08-01), Cuschleg, Jr. et al.
patent: 5020095 (1991-05-01), Morganstein et al.
patent: 5155761 (1992-10-01), Hammond

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