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ITU-T Q.931

ISDN user-network interface layer 3 specification for basic call control

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Organization: ITU-T
Publication Date: 14 February 2003
Status: active
Page Count: 2
scope:

Scope of this Recommendation

The procedures currently described in this Recommendation are for the control of circuit-switched connections, user-to-user signalling connections and packet-switched connections. The transport of other message-based information flows on the D-channel is a subject for further study and will be included in related Recommendations.

NOTE 1 - The term "layer 3" is used for the functions and protocol described in this Recommendation (see Recommendation Q.930/I.450). The terms "data link layer" and "layer 2" are used interchangeably to refer to the layer immediately below layer 3.

NOTE 2 - Alignment of the functions and protocol with those of OSI network layer is for further study.

Document History

ITU-T Q.931
February 14, 2003
ISDN user-network interface layer 3 specification for basic call control
Scope of this Recommendation The procedures currently described in this Recommendation are for the control of circuit-switched connections, user-to-user signalling connections and packet-switched...
December 1, 2002
ISDN user-network interface layer 3 specification for basic call control SERIES Q: SWITCHING AND SIGNALLING Digital subscriber Signalling System No. 1 – Network layer
A description is not available for this item.
May 1, 1998
ISDN user-network interface layer 3 specification for basic call control
Scope of this Recommendation The procedures currently described in this Recommendation are for the control of circuit-switched connections, user-to-user signalling connections and packet-switched...
January 1, 1993
Digital Subscriber Signalling System No. 1 (DSS 1) - ISDN User-Network Interface Layer 3 Specification for Basic Call Control - Digital Subscriber Signalling System No. 1 Network Layer
A description is not available for this item.
January 1, 1989
ISDN User-Network Interface Layer 3 Specification for Basic Call Control - Digital Subscriber Signalling System No. 1 (DSS 1), Network Layer, User-Network Management
A description is not available for this item.

References

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