FHF FernTel 3 - Restore to As-Delivered Condition

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Program the pause following the exchange code
- Lift the handset.
- Press the * and # keys simultaneously.
- Press key 1.
- Press a key from 1 to 5 (the key number corresponds to the duration in seconds)
- Press the key to store the entered duration of the pause.
- Replace the handset.
(1…5)
Program the Enquiry Key (flash time)
For dual-tone multifrequency only. Pressing the enquiry key briefly interrupts the loop to the
private branch exchange (flash) to enable an enquiry to another private branch connection.
The flash time is programmable.
- Lift the handset.
- Press the * and # keys simultaneously.
- Press key 8.
- Enter the code for the desired flash time.
- Press the key to store the selected flash time.
- Replace the handset.
Code / Key Flash time Comment
1 80 ms
2 120 ms As-delivered condition
3 600 ms
(1, 2, 3)
Restore to as-delivered condition
- Lift the handset.
- Press the * and # keys simultaneously.
- Press key 3.
- Press the key to reset the as-delivered condition.
- Replace the handset.
Upon „Resetting to the as-delivered condition“ the PIN is not reset to 0000.