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发明名称
Directory assistance system
摘要
In an automated directory assistance system, the telephone number of the calling party is used to determine whether or not the outgoing "spoken" message will include the area code of the sought-after number.
申请公布号
US5267304(A)
申请公布日期
1993.11.30
申请号
US19910680862
申请日期
1991.04.05
申请人
AT&T BELL LABORATORIES
发明人
SLUSKY, RONALD D.
分类号
H04M1/2745;H04M3/487;H04M3/493;H04Q3/72;(IPC1-7):H04M3/42;H04M3/00;H04M1/56
主分类号
H04M1/2745
代理机构
代理人
主权项
地址
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