ITU-T - Q.490
Testing and Maintenance - Specifications of Signalling Systems R1 and R2 (Study Group XI) 5 pp
inactive, Most Current
| Organization: | ITU-T |
| Publication Date: | 1 November 1988 |
| Status: | inactive |
| Page Count: | 5 |
Document History
Q.490
November 1, 1988
Testing and Maintenance - Specifications of Signalling Systems R1 and R2 (Study Group XI) 5 pp
A description is not available for this item.