JPS6447147A - D-channel contention control test method - Google Patents
D-channel contention control test methodInfo
- 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
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.
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)
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 |
-
1987
- 1987-08-17 JP JP62203718A patent/JPH0697764B2/en not_active Expired - Lifetime
Patent Citations (4)
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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