Method for handling call hold service for use in a CDMA switchin

Details Method for handling call hold service for use in a CDMA switchin Method for handling call hold service for use in a CDMA switchin

1997-11-21

1999-12-14

Chin, Wellington

Gas: heating and illuminating

455414, 379215, H04Q 708

Patent

active

060010525

ABSTRACT:
A call hold handling method for use in an electronic switching system employed in a CDMA communications system comprises the steps of: a) receiving hook flash and numeric digits of the third party from the first party; b) sending hold tone to the second party; c) performing a number translation of the numeric digits; d) checking subscription type of the third party; e) occupying a trunk line and going to step h) if the checking at step d) results in a conventional telephone subscriber; f) requesting and receiving a call processing information from the call hold handler if the checking at step d) results in a wireless subscriber; g) paging the third party if the checking at step d) results in a wireless subscriber; h) connecting the first party and the third party; and i) sending ring-back tone to the third party.

REFERENCES:
patent: 4947421 (1990-08-01), Toy et al.
patent: 5418846 (1995-05-01), Yuasa
patent: 5590183 (1996-12-01), Yoneda et al.
patent: 5680447 (1997-10-01), Diamond et al.
patent: 5818819 (1998-10-01), Hallock et al.
patent: 5828744 (1998-10-01), Nemoto

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