发明名称 |
PILOT TESTING SYSTEM |
摘要 |
PURPOSE:To detect a stack fault of a channel, by collating a signal pattern which is extracted out of a specified channel of an outgoing highway with a signal pattern which is generated from a pattern generating means. CONSTITUTION:A pilot pattern generating circuit 201 produces a specified signal pattern and a signal pattern having a complement relation with said specified signal pattern alternately for each frame in the form the test patterns. A pilot pattern checking circuit 202 collates a signal pattern of the pilot channel on an outgoing highway 108 with a test pattern on a signal line 203. Then an error signal is fed to a signal line 110 when no coincidence is obtained from the above- mentioned collation. |
申请公布号 |
JPS5866453(A) |
申请公布日期 |
1983.04.20 |
申请号 |
JP19810164248 |
申请日期 |
1981.10.16 |
申请人 |
HITACHI SEISAKUSHO KK;NIPPON DENSHIN DENWA KOSHA;OKI DENKI KOGYO KK;NIPPON DENKI KK;FUJITSU KK |
发明人 |
TOKUNAGA KAORU;TAWARA KANJI;SAKAYORI ETSUO;MATSUMOTO TAKASHI;KATSUYAMA TSUNEO |
分类号 |
H04M3/26;H04M3/24;H04Q1/24;H04Q11/04 |
主分类号 |
H04M3/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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