FAULT REPAIR PROCEDURES

10.TONE FAULT

This section explains the fault repair procedure when any of the various tones cannot be heard in the whole system.

10.1 Check Point

When repairing a tone fault, consider that the tone generator circuit is equipped in the TSW circuit card and supplies tone.

Figure 5-20shows an example of the related trunking for dial tone connection.

Dial Tone

TSW DT

LC

ORT

Figure 5-20 Dial Tone Connection

CHAPTER 5

NDA-24300

Page 376

Issue 1

Page 403
Image 403
NEC NDA-24300 manual Tone Fault, Dial Tone Connection