A New Operations Support System Architecture for Broadband IP Networks Jong-Rak Lee leejr@kt.co.kr October 2003

Changes in telecom operational environment Explosive expansion of Internet and increase of users Advent of many CLECs and ISPs in Internet business areas Competition Sophiscated customer requirements Various IP networks and services Various OSSs were developed to meet the needs for individual networks and services management, which resulted in Proliferation of independent legacy OSSs Increased OPEX

IP network is evolving so fast … DU/ISDN PSTN, ISDN RAS AP-Hub xDSL GSR NAS KIX DSLAM GES KORNET Core K-LL Best Effort Router M-Ethernet S/W QoS/Security MPLS IP xDSL M-Ethernet S/W DiffServ IPsec Core : faster, traffic engineered Edge : focus on QoS management

Managing new IP networks (1) Increased requirements for service management QoS/SLA management Customer self-control Top down provisioning  Need for bottom-up data updating completed Customer Self-control receive order Billing order processing Inventory Billing Inventory order processing user profile resource allocated query request Self-control provisioning usage count Current provisioning Customer New real-time configuration Internet ISP

Managing new IP networks (2) Increased requirements for network management DiffServ + MPLS management Traffic volume management  End-to-end flow management using NetFlow and/or sFlow Integration of network and server management Increased requirements for security management Management of anomalous traffic Separation of management network from service network

Why should current OSS be redesigned ? Current Systems are unable to support new IP services Can not deliver premium services such as BoD, QoS/SLA guarantee and security services So many OSSs developed on different platforms and different data models Data integrity and maintenance problems exist System development/Integration takes relatively longer time and is very expensive and risky  Can not meet time to market requirement BML SENSE OMAS NetIS ICIS SO 1.0 SA 1.0 DELMONS ANSWERS TIMS RIMS SML K O S M FM 1.0 CNM RNMS NetSolver HiTS ATM NMS NML CTMS ITOS HiNet NMS PubNet NMS MOST Disaster Mgmt S I G N O S N M IP- xDSL NMS NesPot NMS NAS NMS TEMS CO- LAN NMS EOCMS EMOS DXC-CON FLC -EMS DSLAM -EMS WLL -EMS EML DMAS B-DCS NMS ACOAM ATM EMS DXC-13 NMS PMS COAM CATMS TOMS ELITE MOAM MASTER NEL PSTN/Power/Env Data Transmission/LL Access <Fig> current major KT OSSs

Our goal to a New OSS (NeOSS) Reduced time to market by Applying a common platform Improved data integrity by Applying a common data model Single data entry but multiple uses Providing new functionalities to customers and operators Single sign-on Pre-ordering Order tracking SLA management Enhanced work force management On-line management of field information One-stop handling of customer service requests Single point of contact Reduction of service provisioning and fault handling time

New OSS (NeOSS) platform Leased Line Porvisioning OSS IP Traffic Management System Metro Ethernet Management System xDSL Porvisioning OSS Socket I/F Provision Receive Order Resource Alloc Report Facility Subscriber Receive TT Report GUI GUI Query Information Status Config Status Config Test Subscriber DB load … DB load Facility XML/RPC SNMP SNMP/CLI Common Interfaces Configuration DB Loading TP monitor Management Work order Processing Performance Etc. Scheduling Network Topology Status Mgmt Policy Standard GUI /Single sign On Management Specific Applications Common DB Common Applications

New OSS (NeOSS) common data model Legacy OSS A ABC SDF Data conversion Legacy OSS C Human error ASDF Integrity check ㄱㄴㄷ ㄴㅇㄹ New OSS A Legacy OSS B Common DB New OSS B New OSS C DB mediator

New OSS (NeOSS) interworking architecture BMS Layer ICIS NetIS Common interfaces EAI/Message bus Workflow engine Web services (XML/SOAP) EAI SMS Layer SO FM SA SLA Business EAI/WorkFlow Process Manager WM ADM TOMS CNM MOST NMS Layer Web services ETC externalized process control IP-NMS IP-NMS IP-NMS ATM-NMS PUBNet FR-NMS ICIS : Integrated Customer Information Systtem NetIS : Network Information System SO : Service Ordeing System SA : Service Assurance System SLA : SLA Management System ADM : Access Domain Manager WM : Workforce Management System TOMS : Telecom Outside plant Management System CNM : Customer Network Management System MOST : Transmission NMS IP-NMS : Internet(Kornat) NMS ATM-NMS : ATM NMS PUBNet : Goverment Internet NMS FR-NMS : Frame Relay NMS

Concluding remarks New operational environment requires a new (next generation) OSS which will enable Reduced time to market Faster system development speed Flexibility in a changing business environment Improved service provisioning and maintenance accuracy Ensured data integrity Automated work order processing Keeping customers satisfied More information for customers on performance and usage Ensured customer service level by pre-ordering, order tracking and trouble tracking, etc.

Next generation is just around the corner. Now is the right time to start the development of a New (next generation) OSS.