Q.761�:�Signalling System No. 7 - ISDN User Part functional description (original) (raw)
| Recommendation Q.761 | | | ------------------------ | |
| In force components | ||
|---|---|---|
| Number | Title | Status |
| Q.761 (12/99)� | Signalling System No. 7 - ISDN User Part functional description � | In force |
| Q.761 (1999) Amendment 1 (07/01)� | � | In force |
| Q.761 (1999) Amendment 2 (12/02)� | Support for the International Emergency Preference Scheme � | In force |
| Q.761 (1999) Amendment 3 (01/06)� | Support for the International Emergency Preference Scheme � | In force |
| Q.761 (1999) Amendment 4 (10/09)� | Support for the customized alerting tone (CAT) service � | In force |
| �� | ||
| Superseded and Withdrawn components | ||
| Number | Title | Status |
| Q.761 (11/88)� | Specifications of Signalling System No. 7 - Functional description of the ISDN user part of Signalling System No. 7 � | Superseded |
| Q.761 (03/93)� | Functional description of the ISDN user part of Signalling System No. 7 � | Superseded |
| Q.761 (09/97)� | Signalling System No. 7 - ISDN User Part functional description � | Superseded |
| Q.761 Addendum 1 (05/98)� | � | Superseded |