ITU-T Q.7
Signalling systems to be used for international automatic and semi-automatic telephone working
active, Most Current
Buy Now
| Organization: | ITU-T |
| Publication Date: | 1 November 1988 |
| Status: | active |
| Page Count: | 9 |
Document History
ITU-T Q.7
November 1, 1988
Signalling systems to be used for international automatic and semi-automatic telephone working
A description is not available for this item.