ITU-T - Q.479
Signalling Procedures - Echo-Suppressor Control - Signalling Requirements - Specifications of Signalling Systems R1 and R2 (Study Group XI) 4 pp
inactive, Most Current
| Organization: | ITU-T |
| Publication Date: | 1 January 1989 |
| Status: | inactive |
| Page Count: | 4 |
Document History
Q.479
January 1, 1989
Signalling Procedures - Echo-Suppressor Control - Signalling Requirements - Specifications of Signalling Systems R1 and R2 (Study Group XI) 4 pp
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