Use this option to program lines (1-64) into each of the nine Line Groups (90-98). The order in which you enter lines into a group determines the order in which the system will access the lines when placing an outside call. A line can be in more than one group. In DSX-80/160, you can program a line into a group only if the line is on an installed COIU PCB. If you program a line into a group, and then remove its PCB, the system automatically removes the line from the group.
The following chart shows how you could set up Line Group 90 with lines 1-8 enter in descending order. When placing an outgoing call using group 90, the system will try line 8 first and line 1 last.
| Sample Line Group Program Entry | ||
| Line Group | Program Entry Number | Line Number |
| 90 | 1 | 8 |
| 2 | 7 | |
| 3 | 6 | |
| 4 | 5 | |
| 5 | 4 | |
| 6 | 3 | |
| 7 | 2 | |
| 8 | 1 | |