Specifications

Understanding The Line Connection Details
Common Equipment Type Line Jack Pin No. Connection Telephone Number
J0408,
J0816,
and
J1632
1
1 Auxiliary 1 (Line 2) Tip
2 Line 2 Tip
3 Line 1 Tip
4 Line 1 Ring
5 Line 2 Ring
6 Auxiliary 1 (Line 2) Ring
2
1 Auxiliary 2 (Line 4) Tip
2 Line 4 Tip
3 Line 3 Tip
4 Line 3 Ring
5 Line 4 Ring
6 Auxiliary 2 (Line 4) Ring
J0816
and
J1632
3
1 No Connection
2 Line 6 Tip
3 Line 5 Tip
4 Line 5 Ring
5 Line 6 Ring
6 No Connection
4
1 No Connection
2 Line 8 Tip
3 Line 7 Tip
4 Line 7 Ring
5 Line 8 Ring
6 No Connection
J1632
5
1 No Connection
2 Line 10 Tip
3 Line 9 Tip
4 Line 9 Ring
5 Line 10 Ring
6 No Connection
6
1 No Connection
2 Line 12 Tip
3 Line 11 Tip
4 Line 11 Ring
5 Line 12 Ring
6 No Connection
7
1 No Connection
2 Line 14 Tip
3 Line 13 Tip
4 Line 13 Ring
5 Line 14 Ring
6 No Connection
8
1 No Connection
2 Line 16 Tip
3 Line 15 Tip
4 Line 15 Ring
5 Line 16 Ring
6 No Connection
DSU II Digital Telephone System IMI66–132
Installing The DSU II Digital Telephone System 2 – 15