cable juction between NTE and HomeHub

[Rozgi]

I have an external NTE installed to run my traditional fibre connection. (No FTTH available here.)
It has 3 UTP cables installed on the consumer (right) side: 1. phone 1 (does nothing at all), 2. phone 2, 3. internet. Both of them are connected via the orange / white orange simply.
In the house, we have the version 1 master socket some at least 10-15 meters away with double connection points (and no filters as far as I see) connected with one single UTP (cable no 4): orange&white-orange to the data, while green&white-green to the phone. (Cable no 4 is definitely not the same as cable No3 coming into the house.) 

Which means the two external UTP-s are connected together somewhere to run to the internal master socket.

Is it the best practice ?

Or could this explain my connection issues? (Again I have no idea if the coupling of the cable 2 & 3 & 4 has been made by some proper shielded connection box or just connected the wires simply...)  
Should I invest in cabling and move my master socket (and the HH) closer to the external NTE to eliminate the unknown junction between them?  

Ext NTE

   NET               -------orange---------                                                              ----orange----------       

(Cable 3)         -------or-white-------                   ?????                                 -----or-white-------         internal master

                                                                                              unknown junction        --------green-------        socket 

   TEL                 -------orange--------                                                                --------gr-white----      (Cable 4)

(Cable 2)          -------or-white------            

[Rozgi]

Pictures 

Ext NTE box 

external NTE with the cables 1,2,3Master socket with cable 4Master socket in place

[imjolly]

These external master sockets were a disaster for broadband as they created star wiring  with extension connected to line before the master socket.  I thought wiring in these was changed to go to master and then extensions were run fo master avoiding star wiring

[Rozgi]

I think my one does split of data and phone and does the star shape only for phone.