JPS6447147A - D-channel contention control test method - Google Patents

D-channel contention control test method

Info

Publication number
JPS6447147A
JPS6447147A JP62203718A JP20371887A JPS6447147A JP S6447147 A JPS6447147 A JP S6447147A JP 62203718 A JP62203718 A JP 62203718A JP 20371887 A JP20371887 A JP 20371887A JP S6447147 A JPS6447147 A JP S6447147A
Authority
JP
Japan
Prior art keywords
channel
terminal equipment
multiplexer
line
contention control
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
JP62203718A
Other languages
Japanese (ja)
Other versions
JPH0697764B2 (en
Inventor
Yuzuru Murata
Keitaro Tanahashi
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.)
Ando Electric Co Ltd
Original Assignee
Ando 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 Ando Electric Co Ltd filed Critical Ando Electric Co Ltd
Priority to JP62203718A priority Critical patent/JPH0697764B2/en
Publication of JPS6447147A publication Critical patent/JPS6447147A/en
Publication of JPH0697764B2 publication Critical patent/JPH0697764B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Exchanges (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To test the contention control function of a D-channel by using a test equipment comprising a multiplexer and an output circuit so as to alloy the test equipment to make each terminal equipment into a call request and sending an information signal from each terminal equipment. CONSTITUTION:When an output of a multiplexer 4 coes to a T line D-channel, an output circuit 5 gives it to an E-channel of a frame B and the result is outputted to the R line. When the output of the multiplexer 4 is '0', '0' is outputted to the R line. At first, a controller 6 brings the output information of the multiplexer to '0' and sends '0' to the E channel. In bringing each terminal equipment 1 to the call request with respect to the test equipment 3, since the test equipment 3 sends '0' representing the D-channel operating state of the line T to the E channel, each terminal equipment in the standby state. When the '0' transmission is stopped by a controller 6, each terminal equipment 1 is in the sending state simultaneously and the D-channel contention control is tested easily.
JP62203718A 1987-08-17 1987-08-17 D channel contention control test method Expired - Lifetime JPH0697764B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62203718A JPH0697764B2 (en) 1987-08-17 1987-08-17 D channel contention control test method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62203718A JPH0697764B2 (en) 1987-08-17 1987-08-17 D channel contention control test method

Publications (2)

Publication Number Publication Date
JPS6447147A true JPS6447147A (en) 1989-02-21
JPH0697764B2 JPH0697764B2 (en) 1994-11-30

Family

ID=16478697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62203718A Expired - Lifetime JPH0697764B2 (en) 1987-08-17 1987-08-17 D channel contention control test method

Country Status (1)

Country Link
JP (1) JPH0697764B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6085642A (en) * 1983-10-15 1985-05-15 Nippon Telegr & Teleph Corp <Ntt> Common channel access control circuit for subscriber equipment in multi-point connection
JPS6120448A (en) * 1984-07-06 1986-01-29 Nec Corp Testing method of data transmitting device
JPS61224535A (en) * 1985-03-28 1986-10-06 Nec Corp Simulator of colliding state
JPS61240736A (en) * 1985-04-17 1986-10-27 Fujitsu Ltd Line control diagnostic system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6085642A (en) * 1983-10-15 1985-05-15 Nippon Telegr & Teleph Corp <Ntt> Common channel access control circuit for subscriber equipment in multi-point connection
JPS6120448A (en) * 1984-07-06 1986-01-29 Nec Corp Testing method of data transmitting device
JPS61224535A (en) * 1985-03-28 1986-10-06 Nec Corp Simulator of colliding state
JPS61240736A (en) * 1985-04-17 1986-10-27 Fujitsu Ltd Line control diagnostic system

Also Published As

Publication number Publication date
JPH0697764B2 (en) 1994-11-30

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