We have got a new Spark phone line setup on a new house. Currently it was plugged into the POTS1 line on the ONT. Ever since it was setup, it keeps losing it's phone connection, and I have to contact spark multiple time each time it goes down via online chat to get it working again, which they do eventually get it working. The internet seems ot be fine, it only affects the phone line. It has been impossible to get through to technician directly, and each time I have to chat with a different person and reexplain it. 

I have tested mulitple phones on it when it goes down, and they all have the same problem, so the phone isn't the problem. Also when it goes down, the POTS light on the ONT does not light up when I pick up the receiver, which it does when it is working.

The electrician has been today to install a phone module so that multiple phone lines could be split off POTS1, and  patched around the house. The module the electrican has installed is this one, without the test-in test-out ports and link cable.  http://www.electricsmarts.com/industry/smartecat/product/view/Hubbell/NSOMTM12.

However the phone line on POTS1 was down again today, so they couldn't get any dial tone to test it with on POTS1. I later contacted spark via online chat, and it started working again during that chat. I then connected the POTS1 line into the hub (voice line input 1), which is patched to phones around the house from the outputs below (1,2,3,4 ports), but none of those phones connected to the hub have a dial tone. When I plug a phone directly back into the ONT again on the POTS1 line, there is a dial tone again. I don't think the two issues are related. . Anyone know if this is the correct type of module they should be using?  Or should they be using something else? Or am I missing something here. At my current house, the POTS1 line is just plugged into all the existing old  BT jackpoints and all the phone lines just work.