Maintenance Operations for the Circuit-Switched Digital Capability

Author

Campbell, Loran W. ; Cline, Russell R. ; Litofsky, Barry ; Martz, L.M. ; Varma, Girish K.

Author_Institution

Bell Laboratories, Holmdel, NJ, USA

Volume

30

Issue

9

fYear

1982

fDate

9/1/1982 12:00:00 AM

Firstpage

2053

Lastpage

2056

Abstract

The Bell system is planning to add a new circuit-switched digital capability (CSDC) to the telephone network. This new capability will provide for full duplex, circuit-switched, end-to-end synchronous 56 kbit/s digital connections. Using a combination of existing and new network elements, CSDC will allow present-day call setup methods and will support end-to-end digital data transmission in addition to voice transmission. Critical CSDC network elements are those associated with the loops between customers´ premises and CSDC central offices. This paper provides an overview of the loop maintenance plan for CSDC, focusing on new automatic testing tools and test procedures. Also discussed are the network elements comprising CSDC (including loop configurations) and loop transmission performance objectives.

Keywords

Communication switching, circuit; Communication system maintenance; Subscriber networks; Automatic testing; Central office; Circuit testing; Data communication; Electronic switching systems; Helium; Radio navigation; Subscriber loops; Telephony; Wire;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOM.1982.1095708

Filename

1095708