Telephone numbering plan
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- ITU Normal.Dot
- Draft Numbering Policy for Botswana
- Managing Internet-Driven Change in International Telecommunications
- Numbering Resources for M2M/Iot Connectivity Services (And Other Non-Interpersonal Communications Services (Non-ICS))
- EN 300 607-4 V5.1.0 (2000-03) European Standard (Telecommunications Series)
- ITU Operational Bulletin
- Extra-Territorial Use of E.164 Numbers
- Future of Telephone Numbers: First Consultation
- Numbering Trends – a Global Overview
- (2004 Artech-House)SMS and MMS Interworking in Mobile Networks.Pdf
- ITU Operational Bulletin
- ISDN: Numbering, Addressing, and Interworking
- Feature & Services User Guide
- ITU Operational Bulletin
- ITU Operational Bulletin No.895 Du 15.X.2007
- ITU Operational Bulletin
- Customer Specific Dial Plan
- The National Telephone Numbering Plan