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CHAPTER 6 ND-71548 (E)
Page 386
Issue 2
FAULT RECOVERY DURING TESTS
NAP-200-058
Sheet 1/1
DT (Dial Tone) Connection Fault
START
Dial tone is not heard.
On the MDF, check the cross connections between the telephone and the corresponding line
circuit.
Check whether LT cable is securely connected to the PIM.
Replace LC card with a spare.
DT cannot be heard from one or more lines of the same circuit card.
Replace LC card with a spare.
DT cannot be heard from the lines accommodated by a specific PIM.
Check the switch settings on the TSW/MUX circuit card.
Replace TSW/MUX card with a spare.
Check the switch settings on the TSW circuit card.
Replace TSW card with a spare.
Check whether the “MT24 TSW” cable is securely inserted to the connectors on the front edge
of TSW and MUX cards.
END
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required