Supporting CQMSLA on Leased Line and IPVPN Services

Supporting CQM/SLA on Leased Line and IP/VPN Services Qo. S Team Telecommunication Laboratories Chunghua Telecom Co. , Ltd Email: { weafon, denny, gary, hclee}@cht. com. tw http: //www. cht. com. tw

Supporting SLA Customer Interface Management Perf. Complaints/ Inquiries Order Handling Requirement Report Problem Handling Problem Report Service Problem Handling Impacted Service Performance - Receive perf. data - Establish customer report - Manage SLA perf. - Determine violation info. Planed Maintenance Network Maintenance and Restoration • Service Class Quality Data • Qo. S Violation Notification • Service Problem Report • Availability Notification Service Quality Management Sales Report Problem Handling SLA Violations For Qo. S report SLA Violation Network Perf. and Configuration Data Network Data Management Customer Qo. S/SLA Management Inquiry Responses, Scheduled Report Notifications Service Quality Management Rating and Discounting New Development Upgrade Required Connecting Required

Tuning the Leased Line Network n Simple n Unitary SDH SHDSL FE 1 DSU 768 Kbps Edge Network 512 Kbps SDH SHDSL FE 1 DSU E 1 MUX DXC 4/1 SDH Network DXC 4/1 Core Network Edge Network DCS 1/0 SDH Network SDH SHDSL FE 1 DSU DCS 1/0 SDH SHDSL FE 1 DSU E 1 MUX

Collect Leased Line Qo. S data From Provider Side CQM/SLA System Network provisioning data PAMS OPTIMA LEAMIS DOSS NM Layer SNIMS (SDH/DWDM) TSNC/ LANMACS DCS SDH ADM DCS 1/0 CHT - NET SDH Network MD ADM DCS MD DXC M 13 Network Component Layer HDSL M 13 HDSL D 4 DSU DCS D 4 Tester

Collect Leased Line Qo. S data From Customer Side Desktop FT 1/FE 1 DSUDSU 桌上型 . . Shelf-Type. FT 1/FE 1 DSU. . 機架型 FT 1/FE 1 DSU T 1/E 1 DSU Hub Router T 1/E 1 xx Branch Async. Server ATU -R T 1/E 1 DSLAM DSU ATM 網路 Network 512/64 IP-VPN Leased line B company, C company… T 3 Hub CHTNet OANet Firewall Rinpoche Server CQM/SLA System Router … . . xx Branch High-speed Leased line network IT center of A company Network Management Center

ADSL/ATM Based IP-VPN Network CQM/SLA System RINPOCHE VR VR Router CPE A 1 Hub ATM VR VR CPE A 2 Router CPE B 1 VCG VR CPE A 3 VCG ATU-R Hub Backbone network (ATM) ATU-R ADSL Leased line RINPOCHE VR VR VCG VCG VR ADSL VCG VR Frame Relay Router CPE B 2

Data Monitoring in RINPOCHE BANPS provides the fullrouting information Bridge Mode ATM Network PC Loop DSLAM Line port : 1. Current Rate 2. Usage Rate 3. ATUR_LOSS 4. ATUR_ES 5. ATUC_ES ATU-R PC Fiber ATU-R RINPOCHE monitors the performance parameters of every equipment DSLAM STM-1 line Trunk port : 1. ES 2. SES 3. UAS ATM : 1. Cell lost ratio 2. Cell error ratio 3. Severely error ratio 4. ES 5. SES 6. UAS 7. CV ATU-R PC

Major Functions for CQM/SLA (1) Storage of digitized contracts (2) Retrieval and integration of the quality data in every type of service (3) SLA violations check (4) Customers data management (5) Search interface for customer data (1) Introduction of the contracts offered (2) Search interface for signed contracts (3) Search interface for the Qo. S data of purchased services or active notification (4) SLA violation check or active notification System managers CQM/SLA Non-paid customers NMSs SQM Paid customers For service provider side For customer side

Major Components of CQM/SQM System Network managers CQM/ SLA customers Customer representatives Contract digitize and monitor module Qo. S Data Browse Delivery Account and Service management module Data Storage Module S Q M Data Integration Module Data Retrieve Module NMS A … NMS N Provisioning System A … Provisioning System N

Information Manipulation Component 1. Data Retrieve Module ( FTP, HTTP ) • Static Network Configuration Data • Dynamic Network Operation Data 2. Data Integration Module ( Database ) • Cross-System Integration 3. Data Storage Module ( Database ) • Time-Based Discard Policy

Online Service Quality Report Leased Line (a) Circuit availability for September 2002 (b) Summary of monthly aggregated performance ADSL IP-VPN (c) Average used bandwidth of all circuits (d) Heavily loaded circuits

Conclusion and Future Works Put significant emphasis on Qo. S issues by legislation Eliminate the equipments of obsolete circuits and Enhance the capability of NMSs n Generate customer-oriented reports and notify actively n What can satisfy the requirement of customers and gain the best margin for service providers? n Implement SLA services on other network services, such as MPLS-based and FTTB-based IP-VPN. n n