发明名称 |
Method and apparatus for providing a derived digital telephone voice channel |
摘要 |
A telephone communication system including an analog telephone 52 providing a plain old telephone service (POTS) analog voice channel 53 on a subscriber loop 12 with a digital data line 55 sharing the same subscriber loop. In addition to the analog voice line, the digital data line provides an additional digital voice channel for placing telephone voice calls. |
申请公布号 |
AU5091298(A) |
申请公布日期 |
1998.05.29 |
申请号 |
AU19980050912 |
申请日期 |
1997.10.29 |
申请人 |
AMERITECH CORPORATION |
发明人 |
WILBUR JOHN WALKOE JR.;JAMES STEWART BARBER |
分类号 |
H04L12/70;H04M11/06;H04Q11/04 |
主分类号 |
H04L12/70 |
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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