发明名称 |
Apparatus and method for providing music-on-hold service in key telephone system |
摘要 |
An apparatus and method for providing a music-on-hold service to an originating subscriber requesting a call connection to a busy terminating subscriber in a key telephone system, using an external music-on-hold source coupled to a previously selected central office line port of a central office line circuit to provide a pre-recorded melody.
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申请公布号 |
US6490346(B2) |
申请公布日期 |
2002.12.03 |
申请号 |
US19990426925 |
申请日期 |
1999.10.22 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE TAE-GYU;LEE JEONG-WOO |
分类号 |
H04M1/80;H04M3/428;(IPC1-7):H04M1/64;H04M1/00;H04M3/42 |
主分类号 |
H04M1/80 |
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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