[Asterisk-Users] Echo/fault isolation test gear

[John Todd]

This is off-topic for Asterisk, but since echo problems with the 
X100P cards seems to be a common issue and one which people blame on 
telco loops, I'd suggest getting the following gear: a 3M Dynatel 
subscriber loop test unit.

The 745 is the one I have experience with, and if you have a fairly 
decent clue of what you're doing,  you can test line silence, 
resistance, voltages, polarity, etc.  Well worth a few bucks.  There 
are other models of the Dynatel line, many of which are more complex 
(and more expensive) but will tell you quite a bit about a copper 
loop.

If you read this soon enough, you can bid on one right here (no, I'm 
not selling it):
   http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2572083615&category=25418

JT