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ITU-T Q.932 (05/1998)

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Digital subscriber signalling system No. 1 – Generic procedures for the control of ISDN supplementary services
This Recommendation defines the generic procedures applicable for the control of supplementary services at the user-network interface. These procedures may be used for the invocation and operation of supplementary services in association with existing calls or outside any existing calls. A significant new area addressed by this Recommendation is the support of Virtual Private Networks by means of new optional extensions.
Citation: https://handle.itu.int/11.1002/1000/4377
Series title: Q series: Switching and signalling, and associated measurements and tests
  Q.850-Q.999: Digital subscriber Signalling System No. 1
  Q.930-Q.939: Network layer
Approval date: 1998-05-15
Approval process:TAP
Status: In force
Maintenance responsibility: ITU-T Study Group 11
Further details: Patent statement(s)