Telephone exchange with a further unit

Details Telephone exchange with a further unit Telephone exchange with a further unit

1997-10-23

1999-10-26

Kuntz, Curtis A.

Telephonic communications

With usage measurement

Call charge metering or monitoring

379 67, 379 68, 379 88, H04M 1500

Patent

active

059741252

ABSTRACT:
Telephone exchange with associated voice mail device is connected to a calling subscriber after a predetermined time if the called subscriber does not answer the call, as well as method to store such voice messages in such a device, whereby the voice mail device is able to store voice messages arriving from the calling subscriber and intended for the called subscriber and to send them to the called subscriber on his request. The telephone exchange comprises means which will also connect all further calls for the called subscriber to the voice mail device as soon as one switch-over after timeout of the called subscriber to the voice mail device has been executed. Hence, the exchange recognizes that the called subscriber is not ready to speak and switches all further arriving calls to the voice mail device.

REFERENCES:
patent: 4068101 (1978-01-01), Chemarin
patent: 4580012 (1986-04-01), Matthews
patent: 4580016 (1986-04-01), Williamson
patent: 4998272 (1991-03-01), Hawkins, Jr. et al.
patent: 5222120 (1993-06-01), McLeod
patent: 5268957 (1993-12-01), Albrecht
patent: 5375161 (1994-12-01), Fuller
patent: 5400393 (1995-03-01), Knuth et al.
patent: 5475737 (1995-12-01), Garner et al.
patent: 5555292 (1996-09-01), Eckhart
patent: 5712902 (1998-01-01), Florence et al.

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