Patent
1979-03-28
1981-09-22
Brown, Thomas W.
179 18AD, 179 18B, 179 99LS, H04M 122, H04M 322, H04M 342
Patent
active
042911990
ABSTRACT:
A communication system call tracking arrangement is disclosed which allows a telephone station user to selectively determine the busy-idle status of any other telephone station served by the same system, without utilizing the communication links between the stations. In operation, the inquiring station has the capability of selecting a target station and for receiving a continuous visual indication of the busy-idle status of the selected target station. In one embodiment, it is possible to selectively enable the tracking feature so that an audible signal is provided at the inquiring station when the target station makes a busy-idle status transition.
REFERENCES:
patent: 3253089 (1966-05-01), Breen et al.
patent: 3519757 (1970-07-01), Anderson et al.
patent: 3573389 (1971-04-01), Greenstein et al.
patent: 3576400 (1971-04-01), Schluter
patent: 3704346 (1972-11-01), Smith et al.
patent: 3723654 (1973-03-01), Bunce et al.
patent: 3736382 (1973-05-01), Braun et al.
patent: 3928729 (1975-12-01), Nielson
patent: 4046972 (1977-09-01), Huizinga et al.
patent: 4109113 (1977-10-01), Allison et al.
patent: 4125748 (1977-10-01), Nahabedian et al.
"Dimension Spectrum Expands with Custom Telephone Service", Horenkaamp et al., Bell Laboratories Record, vol. 54, No. 10, Nov. 1976, pp. 274-280.
Densmore Wayne
Quinn Thomas M.
Bell Telephone Laboratories Incorporated
Brown Thomas W.
Tannenbaum David H.
LandOfFree
Communication system tracking arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Communication system tracking arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication system tracking arrangement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-336702