ITU-T - I.253
Call Completion Supplementary Services - Integrated Services Digital Network (ISDN) - General Structure and Service Capabilities (Study Group XVIII) 17 pp
inactive, Most Current
| Organization: | ITU-T |
| Publication Date: | 1 January 1989 |
| Status: | inactive |
| Page Count: | 17 |
Document History
I.253
January 1, 1989
Call Completion Supplementary Services - Integrated Services Digital Network (ISDN) - General Structure and Service Capabilities (Study Group XVIII) 17 pp
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