Acous tic sig nals
The fol lo wing to nes des cri be sig na ling for the PABX when using ana log te le pho nes.
In ter nal dial tone(421 Hz)
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You will hear this dial tone af ter lif ting the hand set for »cal -
ling ex ter nal par ties with line ac cess di git«. This sig nal in di ca -
tes that you can dial a num ber. Af ter 40 se conds this sig nal
chan ges to the busy sig nal; hang up the hand set and then lift
it up again. You will then hear again the in ter nal dial tone.
Busy tone (421Hz)
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You will hear this sig nal, when the cal led ex ter nal or in ter nal
ex ten si on is busy.
Po si ti ve ac knowled ge ment sig nal
(mi xed tone 421Hz und 320 Hz)
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The po si ti ve ac knowled ge ment sig nal in di ca tes that your in -
put has been accepted.
Ne ga ti ve ac knowled ge ment sig nal
(mi xed tone 421Hz and 320 Hz)
///___///___///___///___///___///___///___///___///___//
If you hear this tone, the se lec ted functi on can not be used or
the fea tu re has not been con fi gu red or has been can ce led.
In ter nal rin ging sig nal (421 Hz)
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This sig nal in di ca tes that the te le pho ne of the ex ter nal or in -
ter nal ex ten si on is ringing.
Spe ci al dial tone (421 Hz and 316 Hz mi xed)
//___//___//________//___//___//________//___//_______/
This sig nal in di ca tes that your pho ne has been set for call re -
rou ting.
Ex ter nal dial tone (425 Hz)
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A con ti nu ous sig nal that you hear when you have en ga ged the
ex ter nal ISDN con nec ti on.
Call wai ting tone (421 Hz)
//___//_____________//___//_____________//___//_________
Call wai ting tone. This tone sig nals that an ex ter nal par ty is
cal ling you du ring an on going call. The call wai ting sig nal is
soun ded for a ma xi mum of. 30 seconds.
Time in ter vals of the sig nals in se conds
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1
2
3
4
5
Dis play / LEDs
Acous tic sig nals
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