| Default Features for Lines | |
| 1 | All lines are loop start DTMF.
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| 2 | In DSX-80/160, lines 1-12 ring on line keys 1-12 for extensions 301-316.
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| 3 | In DSX40, lines 1-8 ring on line keys 1-8.
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| 4 | To customize line ringing, use one of the following:
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