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Terminal Pinouts 133
12 Terminal Pinouts
Terminal Blocks
Each terminal block has eight terminal pins for connecting phone
lines to the corresponding modem in the rack. A description and
function of each of the eight pins is given below:
Pin Assignment Purpose
1 TIP Connect to your telephone
2 RING Connect to your telephone
3 TIP Connect to dial up line
4 RING Connect to dial up line
5 RX For use with four wire leased line systems
receive line
6 RX For use with four wire leased line systems
receive line
7 TX For use with two or four wire leased line
systems transmit line
8 TX For use with two or four wire leased line
systems transmit line