International
Electrotechnical
Commission
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Area
Switching and signalling in telecommunications
/ Tone signals for telephony
IEV ref
714-08-09
en
number-unobtainable tone
vacant-code tone (US)
a tone which indicates that the calling party has dialled a number which has not been allocated or which is barred to him
fr
tonalité de numéro non accessible
, f
tonalité indiquant que le numéro demandé n'est pas attribué ou qu'il est interdit au demandeur
ar
نغمة رقم غير موجود بالخدمة
de
Hinweiston für nicht erreichbare Rufnummer, m
es
tono de número no accesible
it
tono di numero non ottenibile
ko
결번 음
빈 부호 음
ja
NUトーン
pl
sygnał tonowy nieosiągalności
pt
tonalidade de número não acessível
sv
hänvisningston
zh
空号音
Publication date:
1992-04
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