 |
� |
 |
|
| � |
Home
: ITU-T
: Publications
: Recommendations
: U�Series
: U.12 |
Recently posted�-�
Search Recommendations |
| � |
� |
| U.12�:�Terminal and transit control signalling system for telex and similar services on international circuits (type D signalling)
� |
| In force components |
Number
|
Title |
Status |
U.12 (03/93)
� |
Terminal and transit control signalling system for telex and similar services on international circuits (type D signalling)
�
|
In force
|
�
� |
| Superseded and Withdrawn components |
Number
|
Title |
Status |
U.12 (11/88)
� |
Terminal and transit control signalling system for telex and similar services on international circuits (type D signalling)
�
|
Superseded
|
|
