CH509021A -
Method and circuit arrangement for electrical wire testing in switching elements in telecommunications, in particular telephone switching systems
- Google Patents
Method and circuit arrangement for electrical wire testing in switching elements in telecommunications, in particular telephone switching systems
Info
Publication number
CH509021A
CH509021ACH208470ACH208470ACH509021ACH 509021 ACH509021 ACH 509021ACH 208470 ACH208470 ACH 208470ACH 208470 ACH208470 ACH 208470ACH 509021 ACH509021 ACH 509021A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Int Standard Electric CorpfiledCriticalInt Standard Electric Corp
Publication of CH509021ApublicationCriticalpatent/CH509021A/en
H04M3/22—Arrangements for supervision, monitoring or testing
H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections
(AREA)
CH208470A1969-02-141970-02-12
Method and circuit arrangement for electrical wire testing in switching elements in telecommunications, in particular telephone switching systems
CH509021A
(en)
Method and circuit arrangement for testing electrical wires in switching elements in telecommunication systems, in particular telephone switching systems
Method and circuit arrangement for the central monitoring of timing circuits of several functional units in telecommunication systems, in particular telephone switching systems
Method and circuit arrangement for monitoring the connection in multi-stage switching networks of telecommunication systems, especially telephone switching systems
Method and circuit arrangement for the automatic testing of exchange lines and subscriber connections in telecommunication systems, in particular teleprinter systems
Circuit arrangement for switching through and monitoring connections in coupling arrangements for telecommunications, in particular telephone switching systems