CEPT - T/SF 55 E
Supplementary Services Available to Subscriber Complex Installations Connected to an Integrated Services Digital Network (ISDN)
active, Most Current
| Organization: | CEPT |
| Publication Date: | 1 January 1987 |
| Status: | active |
| Page Count: | 5 |
Document History
T/SF 55 E
January 1, 1987
Supplementary Services Available to Subscriber Complex Installations Connected to an Integrated Services Digital Network (ISDN)
A description is not available for this item.