发明名称 |
Switch device and system |
摘要 |
A switch device connectable to an ISDN includes a first part which adds a calling ID information element to a first call setup message to be transferred over an ISDN tie line connecting the switch device to another switch device. The calling ID information element includes identification information on a terminal which is connected to the ISDN and makes a call.</PTEXT>
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申请公布号 |
US6633591(B2) |
申请公布日期 |
2003.10.14 |
申请号 |
US19970989790 |
申请日期 |
1997.12.12 |
申请人 |
FUJITSU LIMITED |
发明人 |
GOTO MAMORU;UEHARA TAKESHI;SENBA FUMIKO;MOTOKI UMIHIKO |
分类号 |
H04Q3/58;H04M1/57;H04M3/00;H04Q3/62;(IPC1-7):H04J3/12 |
主分类号 |
H04Q3/58 |
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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