发明名称 |
COMMUNICATION NETWORK AND EXCHANGE |
摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the communication cost between an OPS and exchanges even when many exchanges are used by a communication network. SOLUTION: The communication network consists of a plurality of exchange groups and each exchange group includes at least one exchange provided with an OPS interface. The exchange without the OPS interface exchanges a signal with an OPS via an exchange having the OPS interface in the same group.</p> |
申请公布号 |
JP2001237851(A) |
申请公布日期 |
2001.08.31 |
申请号 |
JP20000047720 |
申请日期 |
2000.02.24 |
申请人 |
NIPPON TELEGR & TELEPH CORP <NTT> |
发明人 |
OKI EIJI;KURIMOTO TAKASHI;NAKAI KOHEI;YAMAKOSHI KOYO;YAMANAKA NAOAKI |
分类号 |
H04M3/00;H04L12/28;H04L12/70;(IPC1-7):H04L12/28 |
主分类号 |
H04M3/00 |
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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