Trunk offering tone | World Tone Database

International call progress tones for IP-PBX and VoIP telephony

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Country
Tone

30 records found, showing data for first record (free service).

The Intrusion tone is equivalent to the Busy override warning tone,
Busy verification tone and the Trunk offering tone. More...

Country	Tone	Frequency/Hz	Cadence/s	Audio
Australia	Intrusion tone	425	1.0 on 15.0 off 0.36 on 15.0 off
Australia	Intrusion tone	425	continuous
Australia	Intrusion tone	525	1.0 on 15.0 off 0.36 on 15.0 off
Australia	Intrusion tone
Botswana	Intrusion tone
Bulgaria	Intrusion tone - I
Bulgaria	Intrusion tone - II
Bulgaria	Intrusion tone - III
China	Intrusion tone
Egypt	Intrusion tone
El Salvador	Intrusion tone
Ethiopia	Intrusion tone
Greece	Intrusion tone
India	Intrusion tone
Jordan	Intrusion tone
Macedonia	Intrusion tone
Malawi	Intrusion tone
Norway	Intrusion tone
Oman	Intrusion tone
Paraguay	Intrusion tone
Portugal	Intrusion tone
Singapore	Intrusion tone
South Africa	Intrusion tone
Sri Lanka	Intrusion tone
Tanzania	Intrusion tone
United States	Intrusion tone
United States	Intrusion tone
United States	Intrusion tone
United States	Intrusion tone
United States	Intrusion tone

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