The DDSN: on line in the united kingdom

Abstract

On 7November 1988, the world-wide deploymentof network intelligence tooka big, ifquiet, step forward On thatdnte, British Telecom 's Digital Derived Services Network (DDSN) cut over into live service. From this beginning,further development culminated in mid-1989 with the succeqjiil commissioning of the DDSN centralised databases, thereby initiating the first Intelligent Network (IN) Database service Advanced Freephone outside North America. Roger C. Ward British Telecom R G Basinger, H Y Chang, T S Chow AT& T Bell Laboratories This paper begins by explaining how the DDSN network elements implement aspects of the IN concept. From this conceptual base, the methoak used to develop the network elements and to prepare them for deployment in the BT networkare identifed The final sections focus upon the procedures used by ET to introduce the DDSN into the UK network and the subsequent provision and support of DDSN based services. I n addressing IN specific issues, BT and ATdT created several key task groups that brought together the necessary expertise at each stage of the project. These groups, supported by extensive planning, w e n vital to the successful completion of this challenging project an appmach which should grow in importance with the coming of increasingly complex INS.