ETSI - ETR 251
Public Switched Telephone Network (PSTN); Signalling System R2; Digital Line Signalling (CEPT Recommendation T/CS 42-03 E (1985))
active, Most Current
| Organization: | ETSI |
| Publication Date: | 1 January 1996 |
| Status: | active |
| Page Count: | 4 |
Document History
ETR 251
January 1, 1996
Public Switched Telephone Network (PSTN); Signalling System R2; Digital Line Signalling (CEPT Recommendation T/CS 42-03 E (1985))
A description is not available for this item.