ITU-T - Q.136
Loop Transmission Measurements - Specifications of Signalling Systems Nos. 4 and 5 (Study Group XI) 1 pp
inactive, Most Current
| Organization: | ITU-T |
| Publication Date: | 1 January 1989 |
| Status: | inactive |
| Page Count: | 1 |
Document History
Q.136
January 1, 1989
Loop Transmission Measurements - Specifications of Signalling Systems Nos. 4 and 5 (Study Group XI) 1 pp
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