| In force components |
Number
|
Title |
Status |
Q.931 (05/98)
|
ISDN user-network interface layer 3 specification for basic call control
|
In force
|
Q.931 (1998) Erratum 1 (02/03)
|
|
In force
|
Q.931/I.451 (1998) Amendment 2 (12/23)
|
Extensions for the support for the calling line identification authentication
|
In force
|
Q.931 (1998) Amendment 1 (12/02)
|
Extensions for the support of digital multiplexing equipment
|
In force
|
|
| Superseded and Withdrawn components |
Number
|
Title |
Status |
Q.931/I.451 (11/88)
|
ISDN user-network interface layer 3 specification for basic call control
This Recommendation is also included but not published in I series under alias number I.451
|
Superseded
|
Q.931 (03/93)
|
ISDN user-network interface layer 3 specification for basic call control
This Recommendation is also included but not published in I series under alias number I.451
|
Superseded
|
