发明授权
- 专利标题： Method to pre-qualify copper loops for ADSL service
- 专利标题（中）： 铜线回路的ADSL服务预先鉴定方法
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申请号： US09218970申请日： 1998-12-22
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公开(公告)号： US06349130B1公开(公告)日： 2002-02-19
- 发明人: Carl R. Posthuma , Albert J. Sawyer
- 申请人： Carl R. Posthuma , Albert J. Sawyer
- 主分类号： H04M124
- IPC分类号： H04M124
摘要：
A method that uses a test system at one end of a communication link to test the communication link for high speed service by coupling the test system to the communication link, placing a telephonic call to telephonic equipment located at an other end of the communication link and testing the communication link with the test system after the call has been terminated at the telephonic equipment.