Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations Mike Lewis on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

DSL detector?

Status
Not open for further replies.

exverizon

Technical User
Oct 11, 2002
105
US
Does anyone sell an inexpensive plug-in device that verifies the presence or absence of DSL service on a line? I've got a Harris butt set with data lockout, but I'm not sure I trust it. Sometimes I go across a line that has DSL, but get no warning signal from the set, then a moment later clip on again and get the beeping warning. I'd like a simple device that lights up or gives a visual indicator that DSL really is there. The only things I've found are complete testers that cost a fortune. Anyone?
 
HI.. Three possibilities.. (1) a high-frequency response telephone receiver will have a "hum" on the line if DSL is present... (2) an oscilloscope will show the 1Mhz or so DSL signal at around 40mv amplitude, and (3) should be possible to build a little line powered DSL detector with two or three transistors to lite an LED. I have a need for this right now, so I'll probably have to build one. AOL (tech support India?) insists that DSL is on the line, but the modem doesn't sync up; same modem does sync up on a different line known to have functioning DSL carrier on it.
-Dave
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top