This has probably been asked a hundred times but my stupid eyes couldn't find a Search button on here.

I'm doing renovations and am going to tackle rewiring the phones. My office is at home and I know which wires are which lines.
I have 2 lines one for fax and Broadband and use it as a second line out when the family is using the main line. Which is only really between 4-5pm at the end of each day. I was thinking of putting all business on one line and private on the other but can't really make this move while my customers still use the fax (would love to move them all to email but a lot of trades people arn't quite there yet). Fax, phone and broadband one one line as a business only line won't work as fax and phone clash.

I'm going to rewire all branches (star system) back to a main connection point in the office area where the main feed comes in. Then run the branches/slaves of that! I'll use portable/chargable pones so will only need a max of 5 slaves off the main box to get the house covered.

Line 1 (Phone only)
Master box office
slave office
slave garage
slave downstairs bedroom
slave Master bed
slave Dining /Kitchen

Line 2
Master box-Running-Networked Broadband , Fax and Spare phone

Jeepers didn't mean to write a book!!
Line 2 is no problem as its just one jack point with a double adapter in it

My question is
Do I need a special connection box for the Master point on line one as it takes so many slaves or can I just connect all branches into each other in the back of a telecom jack point box or may be join them all then loop one master wire back to the box to avoid the clutter in the back of the box

Secondly Do I still have to run the blue ringer to each slave my present wiring doesn't seem to do this but the phones still ring so I can only surmise new technology phones have made this redundent.

Thanks in advance