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ITU-T E.180

Technical Characteristics of Tones for the Telephone Service - Series E: Overall Network Operation, Telephone Service, Service Operation and Human Factors - Operation, Numbering, Routing and Mobile Services - International Operation - Tones in National Signalling Systems

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Organization: ITU-T
Publication Date: 1 March 1998
Status: active
Page Count: 16

Document History

ITU-T E.180
March 1, 1998
Technical Characteristics of Tones for the Telephone Service - Series E: Overall Network Operation, Telephone Service, Service Operation and Human Factors - Operation, Numbering, Routing and Mobile Services - International Operation - Tones in National Signalling Systems
A description is not available for this item.
January 1, 1994
Verious Tones Used in National Networks - Telephone Network and ISDN - Operation, Numbering, Routing and Mobile Service
A description is not available for this item.
January 1, 1989
Technical Characteristics of Tones for the Telephone Service - Telephone Network and ISDN - Operation, Numbering, Routing and Mobile Service (Study Group II) 9 pp
A description is not available for this item.

References

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