User's Manual

CHAPTER 5 NDA-24300
Page 376
Issue 1
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 5-20 shows an example of the related trunking for dial tone connection.
Figure 5-20 Dial Tone Connection
TSW
DT
LC
Dial
Tone
ORT