Summary

This new Recommendation defines performance parameters and objectives for call processing in B‑ISDNs for switched Virtual Channel Connections (VCCs). The B-ISDN call processing parameters defined in this Recommendation are applicable to point-to-point (Type 1) and point‑to‑multipoint (Type 2) connection topologies. The QOS relevant network performance objectives provided in this Recommendation are based on the general principles and generic performance parameters of Recommendation I.350. New performance-related aspects, associated with B-ISDN call processing functions providing access or disengagement, include the addition or release of a party to an existing B-ISDN connection. In a B-ISDN, a virtual connection can generally be either a Virtual Channel Connection (VCC) or a Virtual Path Connection (VPC). Since call processing capabilities are currently defined only for VCCs, a virtual connection within the context of this Recommendation is a VCC.