JPS59172878A - 発着信衝突監視装置 - Google Patents

発着信衝突監視装置

Info

Publication number
JPS59172878A
JPS59172878A JP4817783A JP4817783A JPS59172878A JP S59172878 A JPS59172878 A JP S59172878A JP 4817783 A JP4817783 A JP 4817783A JP 4817783 A JP4817783 A JP 4817783A JP S59172878 A JPS59172878 A JP S59172878A
Authority
JP
Japan
Prior art keywords
relay
call
polarity
incoming
subscriber lines
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.)
Granted
Application number
JP4817783A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6311823B2 (enrdf_load_stackoverflow
Inventor
Toshihiko Nishimura
俊彦 西村
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4817783A priority Critical patent/JPS59172878A/ja
Publication of JPS59172878A publication Critical patent/JPS59172878A/ja
Publication of JPS6311823B2 publication Critical patent/JPS6311823B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
JP4817783A 1983-03-22 1983-03-22 発着信衝突監視装置 Granted JPS59172878A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4817783A JPS59172878A (ja) 1983-03-22 1983-03-22 発着信衝突監視装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4817783A JPS59172878A (ja) 1983-03-22 1983-03-22 発着信衝突監視装置

Publications (2)

Publication Number Publication Date
JPS59172878A true JPS59172878A (ja) 1984-09-29
JPS6311823B2 JPS6311823B2 (enrdf_load_stackoverflow) 1988-03-16

Family

ID=12796099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4817783A Granted JPS59172878A (ja) 1983-03-22 1983-03-22 発着信衝突監視装置

Country Status (1)

Country Link
JP (1) JPS59172878A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6311823B2 (enrdf_load_stackoverflow) 1988-03-16

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