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
active, Most Current
Buy Now
| 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.