ITU-T E.131
Subscriber Control Procedures for Supplementary Telephone Services - Telephone Network and ISDN - Operation, Numbering, Routing and Mobile Service (Study Group II) 8 pp
inactive
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| Organization: | ITU-T |
| Publication Date: | 1 November 1988 |
| Status: | inactive |
| Page Count: | 8 |
Document History
January 1, 1993
Subscriber Control Procedures for Supplementary Telephone Services
General
Many Administrations are planning to introduce supplementary telephone services which are likely to be viable only if controlled by the user (a list of possible supplementary telephone...
ITU-T E.131
November 1, 1988
Subscriber Control Procedures for Supplementary Telephone Services - Telephone Network and ISDN - Operation, Numbering, Routing and Mobile Service (Study Group II) 8 pp
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