Title :
Trunking systems for p.c.m. exchanges
Author :
Duerdoth, W.T. ; Hughes, C.J. ; Bond, D.J.
Author_Institution :
General Post Office, Research Station, London, UK
fDate :
11/1/1967 12:00:00 AM
Abstract :
The introduction of p.c.m. transmission systems is making possible the use of t.d.m. exchanges which switch channels in the digital form. These exchanges need both to switch and to introduce delay in order to give access to all outgoing channels. Space equivalents of the t.d.m. exchanges are developed, and formulas for congestion for the channel-changing units within the exchange are derived. Further work is required before a complete exchange can be analysed.
Keywords :
automatic telephone systems; pulse code modulation; telephone exchanges;
Journal_Title :
Electrical Engineers, Proceedings of the Institution of
DOI :
10.1049/piee.1967.0311
