发明名称 |
Telecommunications rate data base accessing |
摘要 |
Interexchange carriers make their rate information for long-distance service available in a database. PBXs and telephone central offices access that rate information using ISDN and/or SS7 signaling and use it as a basis for determining which carrier to use at any given time in the routing of a call. Such accessing may be carried out on a call-by-call basis. Or a carrier's schedule of rates can be stored locally in the PBX or local switching office, thereby obviating the need for a database query for every call.
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申请公布号 |
US5473630(A) |
申请公布日期 |
1995.12.05 |
申请号 |
US19930006337 |
申请日期 |
1993.01.19 |
申请人 |
AT&T CORP. |
发明人 |
PENZIAS, ARNO A.;YOUNG, JOEL K. |
分类号 |
H04M3/42;H04M15/00;H04M15/34;H04Q3/00;H04Q3/62;H04Q3/66;(IPC1-7):H04M15/00 |
主分类号 |
H04M3/42 |
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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