Crossbar line hunting arrangement

Telephonic communications – Special services – Call waiting

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

379277, H04M 342

Patent

active

047441020

ABSTRACT:
An arrangement for improved two-line hunting in crossbar switching systems is disclosed where the two lines are located in the same line link frame vertical group and vertical file. When the marker determines that the primary line is busy the marker is caused to recycle and to reseize the number group and retranslate the directory number of the primary appearance. When the marker re-obtains the equipment location information for the primary line appearance, it directly modifies one element of the translation information, illustratively, the horizontal group number, to obtain the equipment location of the auxiliary line appearance. Since the marker directly modifies the translation information furnished by the number group it is not necessary to assign a separate directory number to the auxiliary line appearance. The direct modification of the equipment location is performed by providing a selectively operable chain path in the operating path of the horizontal group seizure relays.

REFERENCES:
patent: 2585904 (1952-09-01), Busch
patent: 3133995 (1964-05-01), Zarouni
patent: 3278692 (1966-10-01), Bean
patent: 3320367 (1967-05-01), Krom
patent: 3479465 (1969-11-01), Masucci
patent: 3532831 (1970-10-01), Whitney
Bell Laboratories record, Jul. 1950, p. 298 "Number Group Frame for No. 5 Crossbar" by O. J. Morzenti.
Electrical Engineering, Aug. 1950, p. 679, "No. 5 Crossbar" by F. A. Korn and J. G. Ferguson.
Bell Laboratories Record, Nov. 1950, p. 502, "No. 5 Crossbar Marker" by A. O. Adam.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Crossbar line hunting 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 Crossbar line hunting arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crossbar line hunting arrangement will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1326075

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.