Stage 2 Decription for Call Offering Supplementary Services: Explicit Call Transfer - Series Q: Switching and Signalling; Functions and Information Flows for Services in the ISDN - Supplementary Services Study Group 11; 37 pp
This Recommendation defines the Stage 2 of the Explicit Call Transfer (ECT) supplementary service. Stage 2 identifies the functional capabilities and the information flows needed to support the service as described in Stage 1. The Stage 2 description also identifies user operations not directly associated with a call (see Recommendation I.130 [2]).