ITU-T - Q.412
Line Signalling, Analogue Version - Clauses for Exchange Line Signalling Equipment. Clauses for Transmission Line Signalling Equipment - Specifications of Signalling Systems R1 and R2 (Study Group XI) 7 pp
inactive, Most Current
| Organization: | ITU-T |
| Publication Date: | 1 January 1989 |
| Status: | inactive |
| Page Count: | 7 |
Document History
Q.412
January 1, 1989
Line Signalling, Analogue Version - Clauses for Exchange Line Signalling Equipment. Clauses for Transmission Line Signalling Equipment - Specifications of Signalling Systems R1 and R2 (Study Group XI) 7 pp
A description is not available for this item.