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Go On Hook
(Hang up the telephone handset)
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Dial the Fifth
Digit... |
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4 |
3 |
2 |
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Flash |
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5 |
 |
1 |
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4 is dialed |
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6 |
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7 |
8 |
9 |
0 |
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Once dialing 4 and letting go of the
dial, it spins to the normal position. This action causes
the the dial to open and closes the line loop four times causing
the second selector switch in your central office to make four
vertical steps. It then hunts for an idle trunk to a third
selector switch.
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