| Type |
H1 |
H0 |
Signalling Network Management Messages |
| CBA |
6 |
1 |
Change Back Acknowledgement Signal |
| CBD |
5 |
1 |
Change Back Declaration Signal |
| CNP |
4 |
8 |
Connection Not Possible Signal |
| CNS |
3 |
8 |
Connection Not Successful Signal |
| COA |
2 |
1 |
Change Over Acknowledgement Signal |
| COO |
1 |
1 |
Change Over Order Signal |
| CSS |
2 |
8 |
Connection Successful Signal |
| DLC |
1 |
8 |
Signalling Data Link Connection Order Signal |
| ECA |
2 |
2 |
Emergency Change Over Acknowledgement Signal |
| ECO |
1 |
2 |
Emergency Change Over Order Signal |
| LFU |
6 |
6 |
Link Force Uninhibit Signal |
| LIA |
3 |
6 |
Link Inhibit Acknowledgement Signal |
| LID |
5 |
6 |
Link Inhibit Denied Signal |
| LIN |
1 |
6 |
Link Inhibit Signal |
| LLT |
7 |
6 |
Link Local Inhibit Test Signal |
| LRT |
8 |
6 |
Link Remote Inhibit Test Signal |
| LUA |
4 |
6 |
Link Uninhibit Acknowledgement Signal |
| LUN |
2 |
6 |
Link Uninhibit Signal |
| RCT |
1 |
3 |
Signalling Route Set Congestion Set Signal |
| RSR |
2 |
5 |
Signalling Route Set Test Signal for Restricted Destination |
| RST |
1 |
5 |
Signalling Route Set Test Signal for Prohibited Destination |
| TFA |
5 |
4 |
Transfer Allowed Signal |
| TFC |
2 |
3 |
Transfer Controlled Signal |
| TFP |
1 |
4 |
Transfer Prohibited Signal |
| TFR |
3 |
4 |
Transfer Restricted Signal |
| TRA |
1 |
7 |
Traffic Restart Allowed Signal |
| UPU |
1 |
A |
User Part Unavailable Signal |
