Exchange and conference communication method therefor

Details Exchange and conference communication method therefor Exchange and conference communication method therefor

2005-02-25

2008-09-30

Tieu, Binh K (Department: 2614)

Telephonic communications

Multi-line or key substation system with selective switching...

With special service

C379S202010, C379S205010, C379S201110, C370S260000, C370S263000

Reexamination Certificate

active

07430288

ABSTRACT:
An exchange capable of increasing the number of participants in a conference without increasing conference circuits for conference communications. The exchange (2) switches connections either between a line wire (11) and a plurality of extensions (10a) to (10c) or between plural extensions and plural line wires. The exchange (2) comprises: a memory (27) registered with plural telephone numbers grouped; and a controller (26) which is notified of a demand of the conference communications from an extension telephone (3a) connected with the extensions (10a) to (10c), for acquiring other telephone numbers of the same group of the telephone number of the extension telephone (3a) thereby to form a channel for unidirectional communications, and which is notified of a demand from the extension telephone (3a) for bidirectional communications with the telephone selected from the other telephones in the unidirectional communications, for forming a channel so that the unidirectional communications with the telephone of the selected telephone number may be the bidirectional communications.

REFERENCES:
patent: 4964157 (1990-10-01), Aoshima
patent: 5442622 (1995-08-01), Hokari
patent: 5737390 (1998-04-01), Mano
patent: 5815817 (1998-09-01), Suzuki
patent: 6208639 (2001-03-01), Murai
patent: 6563817 (2003-05-01), Murai
patent: 2000/36873 (2000-02-01), None
PCT International Search Report dated May. 20, 2005.

Affiliated with

Also associated with

Rating

Exchange and conference communication method therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exchange and conference communication method therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exchange and conference communication method therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3982276