https://business.forums.bt.com/t5/Archive/Uk-landline-tests/m-p/29479#M16422 I have seen a comPany that currently performs landline tests on numbers and will return a status as to whether it is active or not. They say they perform this test down a physical line in their offices and it does not cause the landline to ring at all.<BR /><BR />Does anyone have any idea how they are performing this test or what hardware they may have to make this possible? Sat, 20 Aug 2011 18:22:50 GMT ASP 2011-08-20T18:22:50Z https://business.forums.bt.com/t5/Archive/Uk-landline-tests/m-p/29479#M16422 I have seen a comPany that currently performs landline tests on numbers and will return a status as to whether it is active or not. They say they perform this test down a physical line in their offices and it does not cause the landline to ring at all.<BR /><BR />Does anyone have any idea how they are performing this test or what hardware they may have to make this possible? Sat, 20 Aug 2011 18:22:50 GMT https://business.forums.bt.com/t5/Archive/Uk-landline-tests/m-p/29479#M16422 ASP 2011-08-20T18:22:50Z