everything on the 48, 64, 192, ipk is done by ports

you'll need to find out the port number(s) of the phone(s) that need to ring

if the phone has a display go to it & press feature 4. display will show the ext & port numbers

1>get into programming
2>go to program 4-01 for day ring or 4-02 for night ring
3>press conference to get to the port you need to program
4>press the buttons of the lines that need to ring. red=delay, off=no ring, green=right away
5>transfer to write
6>if no others press speaker to end or go to <7>
7>type in 01 on the keypad
8>press conference to go to the next port
9>go to step 4