JPS5657380A - Connection system for multiparty subscriber circuit - Google Patents

Connection system for multiparty subscriber circuit

Info

Publication number
JPS5657380A
JPS5657380A JP13381679A JP13381679A JPS5657380A JP S5657380 A JPS5657380 A JP S5657380A JP 13381679 A JP13381679 A JP 13381679A JP 13381679 A JP13381679 A JP 13381679A JP S5657380 A JPS5657380 A JP S5657380A
Authority
JP
Japan
Prior art keywords
circuit
8ptt
8tel0
routes
connection
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
JP13381679A
Other languages
Japanese (ja)
Inventor
Toshiyuki Shimazaki
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 JP13381679A priority Critical patent/JPS5657380A/en
Publication of JPS5657380A publication Critical patent/JPS5657380A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
    • H04Q5/08—Signalling by continuous ac
    • H04Q5/10—Signalling by continuous ac using single frequencies for different subscribers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To realize not only the simplification of the multiparty subscriber circuit but the common use of the party trunk line, by securing a connection via the link of the switch frame among the party subscriber circuit, the signal transmission circuit of the party trunk line and the DC loop detection circuit respectively. CONSTITUTION:When the telephone number 8TE0 is dialed through the TEL, the CC of the automatic telephone switchboard identifies the idle circuit to which the 8TE0 belongs to carry out the selection of the idle 8PTT and the link selection at the SW plus the sending of the 8PTT to the control order. A connection is given between the 8PTC and 8PTT via the routes 6 and 7 and by the function of the relay which correspondes to the frequency allotted to the 8PTT. Then a connection is given to the signal sending circuit and the DC detection circuit via the routes 6 and 7 each, and thus the relay of the 8PTT actuats to send the call signals to the 8TEL0 intermittently in the 3-second priod of 1-second make/2-second break. With off-hook of the 8TEL0, the realy of the 8PTC works to secure a detection via the call control circuit. Thus the CC identifies the state of the 8TEL0 to close the routes 2 and 3.
JP13381679A 1979-10-17 1979-10-17 Connection system for multiparty subscriber circuit Pending JPS5657380A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13381679A JPS5657380A (en) 1979-10-17 1979-10-17 Connection system for multiparty subscriber circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13381679A JPS5657380A (en) 1979-10-17 1979-10-17 Connection system for multiparty subscriber circuit

Publications (1)

Publication Number Publication Date
JPS5657380A true JPS5657380A (en) 1981-05-19

Family

ID=15113704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13381679A Pending JPS5657380A (en) 1979-10-17 1979-10-17 Connection system for multiparty subscriber circuit

Country Status (1)

Country Link
JP (1) JPS5657380A (en)

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