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The N3-L Junction for Providing the Interconnection of Long- and Short-Haul Carrier Systems on a Group Basis

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1 Author(s)
Haner, R. ; Bell Telephone Labs., North Andover, Mass.

The need for dedicated telephone circuits between small population centers, geographically separated by large distances, is on the increase. The present practice of interconnecting long- and short-haul carrier systems at voice frequency to provide these circuits is inefficient and costly. The N3-L junction provides this interconnection on a group basis, thereby eliminating the costly channelizing equipment at the interface of the two facilities. Several incompatibilities between the signal on each of the facilities such as compressed transmission and high-level carriers on the N system are treated by the junction.

Published in:

Communication Technology, IEEE Transactions on  (Volume:17 ,  Issue: 2 )

Date of Publication:

April 1969

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