Chapter 1 Troubleshooting
B
Is the cable type correct?
- Two-conductor (PSTN)
- Four-conductor (PBX)
No
Yes
Is the cable in good working condition?
- Normal continuity
- Straight, unlooped, uncoiled routing
- Appropriate cable length
Replace the cable.
Yes
No
Is a sufficient line voltage
obtained via Diag?
Replace PWBA HYUI.
Request a line repair.
Version 1
2006.11.21