Merlin 3070 Service And Maintenance Manual page 71

Symptom:
A particular outside line does not ring. Other lines do ring.
Possible Cause
1 . Wiring between the network
interface and control unit is
faulty.
TROUBLE ON SEVERAL TELEPHONES
Recommended Action
1. Make sure wiring between network interface
and control unit is not damaged.
Make sure connectors are plugged in
securely.
Ringing
B1-3