ITU-T Q.21
SYSTEMS RECOMMENDED FOR OUT-BAND SIGNALLING
active, Most Current
Buy Now
| Organization: | ITU-T |
| Publication Date: | 1 November 1988 |
| Status: | active |
| Page Count: | 4 |
Document History
ITU-T Q.21
November 1, 1988
SYSTEMS RECOMMENDED FOR OUT-BAND SIGNALLING
A description is not available for this item.