Multiplex communications – Wide area network – Packet switching
Patent
1993-09-17
1995-01-31
Chin, Wellington
Multiplex communications
Wide area network
Packet switching
H04L 1256
Patent
active
053864140
ABSTRACT:
A method and apparatus that uses the number of in-service trunks in each trunk group connected to a communication switch as the number of indices that are contained in its respective trunk group distribution table. Each of the indices of each trunk group distribution table corresponds to a single trunk ID of a respective in-service trunk of the trunk group. The method provides for a uniform distribution of call assignments among the indices. Thus, with the uniform distribution of indices, the assignment of trunks to calls will also be uniformly distributed. With trunk traffic distributed among all the trunks of a trunk group, the overall efficiency of the trunk group will be very high. Further, if a trunk group has a loss or an addition of one or more of its trunks, the method and apparatus also provides for a dynamic reforming of its trunk group distribution table such that each of the indices of the reformed table corresponds to a single trunk ID of an in-service trunk, thereby maintaining the uniform distribution and high efficiencies even when there is a change in equipment.
REFERENCES:
patent: 4831649 (1989-05-01), Mejane
patent: 5099475 (1992-03-01), Kozaki et al.
Chou Ching-Roung
Rupsis Paul A.
Shur David H.
AT&T Corp.
Chin Wellington
Penrod Jack R.
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