Information Technology - Telecommunications and Information Exchange Between Systems - Private Integrated Services Network - Specification, Functional Model and Information Flows - Message Waiting Indication Supplementary Service
Edition 2004-12-01

Information Technology - Telecommunications and Information Exchange Between Systems - Private Integrated Services Network - Inter-Exchange Signalling Protocol - Message Waiting Indication Supplementary Service
Edition 2004-01-01

Wireless Features Description: Call Waiting (CW)
Edition 2007-10-12

Mobile Application Part (MAP) - Voice Feature Scenarios: Call Waiting
Edition 2007-07-12

Wireless Features Description: Message Waiting Notification (MWN)
Edition 2007-10-12

MAP Enhancements to Support Enhanced Message Waiting Notification (MWN)
Edition 2006-03

Dangerous goods transportation - Requirements for waiting places, loading and unloading of cargo
Edition 2022-01-06

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Message waiting indication supplementary service [ISO/IEC 15506 (2003), modified]
Edition 2004-03-01

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Message waiting indication supplementary service [ISO/IEC 15505 (2003), modified]
Edition 2004-03-01

Mobile Application Part (MAP) - Voice Feature Scenarios: Message Waiting Notification
Edition 2012-08-10