[cisco-voip] Old cisco-voip thread on VG-224 dead ports

[Tim Reimers]

I was looking around for some info
on VG-224 ports, and found this archived thread on Gossamer from 2008..
 
http://www.gossamer-threads.com/lists/cisco/nsp/96100
 
I have a bit of info to offer on this one - although it doesn't help my problems.
 
An old tip-and-ring PBX tech told me that in his experience, you can often get this behaviour from devices (ports, station extensions, etc in his world) when the line length is too long, and the impedance is very out of range.
 
He says that can make ports behave badly and do this kind of thing, or blow outright from trying to match the impedance of the line.
 
There are devices that can present the needed 600 ohm impedance to the VG-224 and stabilize this -
Unfortunately, I am not enough of a line tech to know whether I'm seeing the right thing or not - maybe someone else knows of such a product by the correct part number from some manufacturer..
 
This makes for some interesting reading --
http://www.sandman.com/loop.html
although it's pretty simple and sales oriented..
 
 
 
I have a VG-224 with some blown ports, but I can't find anything on VG-224 port repair, other than sending it to Cisco..
 
 
 
 
 
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