Telephonic communications – Multi-line or key substation system with selective switching... – Line status indication or call alerting
Patent
1993-09-20
1995-11-07
Chin, Stephen
Telephonic communications
Multi-line or key substation system with selective switching...
Line status indication or call alerting
375165, H64M 100
Patent
active
054652928
ABSTRACT:
A trading telephone unit of a trading telephone system includes three display devices and control keys on the trading telephone unit. A first display device is provided at an upper left side of the unit having a function keyboard and a ten-key keyboard provided thereunder. On the right side of the unit, two display devices are provided in parallel with one of the two display devices being a second display device having, for example, twenty line selecting keys and a third display device having fifteen line selecting keys and four incoming line selecting keys, thereby enabling the unit to indicate thirty-five lines at once. The trading telephone includes pagenation memory having, for example, ten pages of memory with each page carrying thirty-five line names and dialing numbers. By user request, any one of the pages is called on the second and third display devices with the present page number being displayed on the third display device and on-hold line status information being displayed on the first display device.
REFERENCES:
patent: 4926470 (1990-05-01), Sanford
patent: 5119413 (1992-06-01), Okumura et al.
patent: 5153908 (1992-10-01), Kakizawa
patent: 5182768 (1993-01-01), Nakano et al.
patent: 5230017 (1993-07-01), Alexander
patent: 5245653 (1993-09-01), Izumi
patent: 5299256 (1994-03-01), Hu
Kokubun Yoshiyuki
Kurumada Toshimi
Sato Takashi
Takahashi Toshie
Chin Stephen
Hitachi Telecom Technologies Ltd.
Loomis Paul
LandOfFree
Trading telephone does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trading telephone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trading telephone will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-201612