JPS54109709A - Verification system - Google Patents

Verification system

Info

Publication number
JPS54109709A
JPS54109709A JP1658878A JP1658878A JPS54109709A JP S54109709 A JPS54109709 A JP S54109709A JP 1658878 A JP1658878 A JP 1658878A JP 1658878 A JP1658878 A JP 1658878A JP S54109709 A JPS54109709 A JP S54109709A
Authority
JP
Japan
Prior art keywords
operator
voice
converted
transmitted
digital signal
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP1658878A
Other languages
Japanese (ja)
Inventor
Kazuhiko Takagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP1658878A priority Critical patent/JPS54109709A/en
Publication of JPS54109709A publication Critical patent/JPS54109709A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable the iterruption of the operator for the timedivision electronic exchange by connecting the 3-terminal trunk to the time switch via the coder/ decoder.
CONSTITUTION: The voice of subscriber A is supplied to time switch T1 in the form of the digital signal via the A/D conversion function of coder/decoder CODEC. This digital signal is then converted into the analog signal through CODECc, supplied to 3-terminal trunk TWT, then distributed to incoming circuit j and k, and also converted into the digital signal to be delivered to outgoing circuit n of subscriber B as well as to outgoing circuit r of the operator. Each of these delivered digital signals is converted to the analog signal through CODECb and f to be transmitted to B and the operator. In the same way, the voice of B is transmitted to A and the operator, and the voice of the operator is transmitted to A and B.
COPYRIGHT: (C)1979,JPO&Japio
JP1658878A 1978-02-17 1978-02-17 Verification system Pending JPS54109709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1658878A JPS54109709A (en) 1978-02-17 1978-02-17 Verification system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1658878A JPS54109709A (en) 1978-02-17 1978-02-17 Verification system

Publications (1)

Publication Number Publication Date
JPS54109709A true JPS54109709A (en) 1979-08-28

Family

ID=11920424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1658878A Pending JPS54109709A (en) 1978-02-17 1978-02-17 Verification system

Country Status (1)

Country Link
JP (1) JPS54109709A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57154964A (en) * 1981-03-19 1982-09-24 Fujitsu Ltd Call monitoring system
JPS59165555A (en) * 1983-03-09 1984-09-18 Nec Corp Circuit monitoring system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57154964A (en) * 1981-03-19 1982-09-24 Fujitsu Ltd Call monitoring system
JPS59165555A (en) * 1983-03-09 1984-09-18 Nec Corp Circuit monitoring system

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