Off-hook Ringing
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Explanation
To be called while the handset is off-hook.
Erläuterung
Mit abgehobenem Hörer angerufen werden.
Operating sequences
| Step 1 | Step 2 | Step 3 | Step 4 | Step 5 |
|---|---|---|---|---|
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|
|
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| A talks to B | B goes on-hook, A is still off-hook, hears busy tone and phone display shows Disconnected
|
After 10 seconds: display of phone A falls into idle mode and busy tone has gone |
C calls A, A is still off-hook, phone A rings |
A presses  key to answer the call,A talks to C |
