Integrated Services Digital Network (ISDN) – Call Park Supplementary Service
|Publication Date:||1 March 1996|
This standard specifies the service capabilities of the Call Park service within the context of an Integrated Services Digital Network (ISDN). Call Park is a Circuit-Switched service that allows a user to interrupt a voice or voice-band data communication on an existing call, and then reestablish communications from the same or different terminal equipment within the same Call Park Subscriber Group. The associated switching, signaling specifications, subscription options, and interactions with services defined in other American National Standards are also provided.
The purpose of this standard is to allow maximum compatibility among public- and user-owned telecommunications equipment in order to increase the attractiveness and usefulness of ISDNbased capabilities.