ITU-T - Q.311
Line Signalling-2600 Hz Line Signalling - Specifications of Signalling Systems R1 and R2 (Study Group XI) 2 pp
inactive, Most Current
| Organization: | ITU-T |
| Publication Date: | 1 November 1988 |
| Status: | inactive |
| Page Count: | 2 |
Document History
Q.311
November 1, 1988
Line Signalling-2600 Hz Line Signalling - Specifications of Signalling Systems R1 and R2 (Study Group XI) 2 pp
A description is not available for this item.