Symptom; Telephone Cannot Make Or Receive Calls (Ovd Message Received) - Nortel Meridian 1 Planning, Installation And Operating Instructions

Symptom:

Telephone cannot make or receive calls (OVD message
received)
The telephone cannot make or receive calls. There is an OVD message
indicating the TN for only this telephone has been disabled. Look up all
system messages in the Option 11C Compact software guide and follow the
instructions given. If the fault does not clear, use this procedure.
Constantly observe and look up system messages as you perform this
procedure.
• Peripheral Equipment (PE) circuit card
• Telephone
• Wiring between the cross-connect terminal and the telephone
• Wiring between the Peripheral Equipment shelf and the telephone
Option 11C Compact
Chapter 25 — Fault locating and clearing
Planning, Installation, Fault Clearing and CCBR Guide
Page 519 of 536