Signaling in call transfer calling operations to control the ini

Details Signaling in call transfer calling operations to control the ini Signaling in call transfer calling operations to control the ini

1996-06-07

1998-08-04

Tsang, Fan S.

Telephonic communications

Audio message storage, retrieval, or synthesis

Multilingual system or operation

379207, 379211, 379230, H04M 164

Patent

active

057906386

ABSTRACT:
Responsive to an incoming call made to a primary telephone number subscribing to a call transfer calling service feature, a first switching node queries a data base to retrieve at least one transfer-to secondary number. The first switching node then signals other switching nodes in the telephone network to set up an outgoing legs to each secondary number telephone. The signals transmitted by the first switching node further direct each of the other switching nodes in the network to inhibit the initiation of any call transfer service features associated with the secondary number telephones. The signals may further include a transfer service indicator and a counter identifying the number of prior call transfer which have occurred in connection with the originally received call. If the counter exceeds a given preset threshold, the other switching nodes reject further transfer of the call.

REFERENCES:
patent: 4905302 (1990-02-01), Childress et al.
patent: 5018194 (1991-05-01), Suzuki et al.
patent: 5206901 (1993-04-01), Harlow et al.
patent: 5327486 (1994-07-01), Wolff et al.
patent: 5452349 (1995-09-01), Uehara et al.
patent: 5521969 (1996-05-01), Paulus et al.

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