Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call transfer supplementary service (V1.3.1)
Edition 2004-04-01

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call interception Additional Network Feature (ANF) (V1.2.1)
Edition 2004-05-01

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Recall supplementary service (V1.2.1)
Edition 2006-05-01

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Message waiting indication supplementary service (V1.2.1)
Edition 2004-06-01

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call offer supplementary service (V1.3.1)
Edition 2003-12-01

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Do not disturb and do not disturb override supplementary services (V1.3.1)
Edition 2003-12-01

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call completion supplementary services (V1.3.1)
Edition 2003-12-01

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call intrusion supplementary (V1.3.1)
Edition 2003-12-01

Private Integrated Service Network (PISN) - Specification, functional models and information flows - Call priority interruption and call priority interruption protection supplementary service (V1.2.1)
Edition 2004-05-01

Private Integrated Services Network (PISN) - Cordless Terminal Mobility (CTM) - Call handling additional network features - Functional capabilities and information flows
Edition 2001-06-01