DocumentCode
1240824
Title
Developments of Communication in Switzerland
Author
Bachmann, Andreas E.
Author_Institution
PTT Research Labs., Bern, Switzerland
Volume
22
Issue
9
fYear
1974
fDate
9/1/1974 12:00:00 AM
Firstpage
1447
Lastpage
1455
Abstract
A brief review of Swiss PTT history shows that a number of switching systems have been introduced over the years. This problem of inhomogeneity shall be overcome in the future by a unique all digital PCM telephone network currently being developed which will be introduced gradually in the 1980´s. Transmission systems will use more minicoaxial cables for carrier-as well as PCM-systems. A special PCM transmission system network which will reach the major cities will provide data transmission service for channels up to 48/64 kbit/s. This early data network shall be combined later with the PCM telephone network.
Keywords
Communication systems; Digital transmission; Switzerland; Telephone systems; Cables; Cities and towns; Data communication; Economic indicators; History; Manufacturing; Phase change materials; Switching systems; Telegraphy; Telephony;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOM.1974.1092399
Filename
1092399
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