ISO/IEC-13872 › Complete Document History
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network Specification, functional model and information flows Call Diversion supplementary services
Complete Current Edition: |
2ND EDITION - INFORMATION TECHNOLOGY - TELEC - April 1, 2003
|
Obsolete Revision Information: |
1ST EDITION - INFORMATION TECHNOLOGY - TELEC - Dec. 15, 1995
|