Lucent Technologies 5 manual Some Phones Are Dead No Dial Tone or Lights

MERLIN LEGEND Communications System Release 5.0		Issue 1
System Manager’s Guide 555-650-118		June 1997
8 Troubleshooting the System
	Some Phones Are Dead (No Dial Tone or Lights)	Page 8-3
	Some Phones Are Dead	8
	(No Dial Tone or Lights)

Possible Cause 1: The telephones are not receiving power.

What to do: Check that each telephone is plugged into a telephone wall jack known to be working.

■If the phones now have dial tone and lights, there may be a problem with the system wiring or the control unit associated with the faulty phone(s). Call the Lucent Technologies Helpline at 1 800 628-2888 (consultation charges may apply).

■If the phones are still dead, go to Possible Cause 2.

Possible Cause 2: For single-line telephones, the Idle Line Selection may be set incorrectly. (If not a single-line telephone, skip to Possible Cause 4.)

What to do: Use centralized telephone programming to ensure that the

Ringing/Idle Line Preference is set to On (see Chapter 5 in System

Programming). Check to see whether the phone now has dial tone.

■If the phone receives dial tone, you have solved the problem.

■If the phone is still dead, go to Possible Cause 3.

Possible Cause 3: For single-line telephones, the Auto Line Selection may be set incorrectly; see Chapter 5 in System Programming. (If not a single-line telephone, skip to Possible Cause 4.)

What to do: Use centralized telephone programming to set the Auto Line

Selection for the extension. Check to see whether the phone now has dial tone.

■If the phone receives dial tone, you have solved the problem.

■If the phone is still dead, go to Possible Cause 5.

NOTE:

The following procedure may help Lucent Technologies Helpline technicians analyze your problem. However, you should not perform this procedure unless you have experience removing the control unit cover and working with control unit extension jacks. Before proceeding, consult system planning Form 2a, System Numbering: Extension Jacks.