Thanks for that - so its the Telco or ISDN equipment causing the issue?<br><br>Here is a pic of the box the ISDN terminates: <a href="http://bit.ly/Af6jp6">http://bit.ly/Af6jp6</a><br>(There are 3 of these units)<br><br>The boxes seem to draw some power from the connection but also accept a power via a plug.<br>
Maybe I should just plug them into the main power - What do you think?<br><br>The ISDN's are in use in an old Toshiba PBX so are 100% functional. <br>I can call the Telco but not sure what I can ask them to do.<br><br>
<br><br>