ITU-T E.175-1988 Models for International Network Planning - Telephone Network and ISDN - Operation, Numbering, Routing and Mobile Service (Study Group II) 3 pp
Network planning plays an important role in the overall responsibility to provide telecommunications and due consideration has to be given to a number of relevant factors, e.g. technical, economic and operational.
ITU-T E.175-1988 history
1988ITU-T E.175-1988 Models for International Network Planning - Telephone Network and ISDN - Operation, Numbering, Routing and Mobile Service (Study Group II) 3 pp