Hi
lines go in lco1,lco2 pins 1&2 and 4&5.
MBU MJ1(CO)
Connector Socket Pin Number NO SIGNAL NAME
RJ45
1,2 CO-R, CO-T
3 Reserved
4,5 CO-R, CO-T
6,7,8 Reserved
extensions in dkt1,2 etc pins 4&5 (centre pair)
Connector Socket Pin Number NO SIGNAL NAME
RJ45
1,2,3 Reserved
4,5 DKT-R, DKT-T
6,7,8...