CSS meaning in Telecommunication ?

Answer: What is Customer Service System mean?

The Customer Service System (CSS) of the BT Group (previously British Telecommunications) is the core operational support system for BT, bringing in 70% of income for the company (figures from 1997). BT rolled out CSS nationally in 1989 and provided an integrated system for telephony—order handling, repair handling and billing.

BT Customer Service System (BT/CSS) was developed by Logica in 1984, costing £1bn to implement, representing the largest computer project undertaken in Europe and the largest integrated database in the world, at the time.

In 2005, the CSS databases deployed by BT handled 23 million customers, with 13 terabytes of data spread out over 28 mainframe images. The databases supported 230 million transactions per day generated by over 40,000 users.

CSS is still used by BT but it is now controlled by Openreach. BT retail migrated all accounts from CSS to a new billing system known as Geneva/Oneview/Avalon. This was to support the migration to WLR3.

reference

Full Form	Category
Cognitive Science Society	Academic & Science
Corpus Sentence Search	Academic & Science
Central Support Services	Academic & Science
Commonwealth Secondary School	Academic & Science
College of Social Studies	Academic & Science
College of Saint Scholastica	Academic & Science
Control Systems Society	Academic & Science
Chiswick Community School	Academic & Science
Coombabah State School	Academic & Science
Cassilandia	Airport Code
Critical Safety Systems	Business
City Sight Seeing	Business
Computing Support Services	Business
Computerized Supervisory System	Business
Callista Software Services	Business
CSS Stellar, PLC.	Business
Contrans Group, Inc.	Business
Clean Seas Tuna, LTD.	Business
C S S Industries, Inc.	Business
Carbon Structural Steel	Business
Camille Saint-Saëns	Community
Community School Self	Community
Catholic Social Services	Community
Community and Senior Services	Community
Colorado Springs School	Community
Civil Superior Service	Community
Car Sharing Scheme	Community
Communications Standards Summary	Computer and Networking
Composite Source Signal	Computer and Networking
Convolutional Spectral Shaping	Computer and Networking
Cryptography Support Services	Computing
Communications Support System	Computing
Complex Script Support	Computing
Computer Search System	Computing
Cybershot Station	Computing
Computing and Software Systems	Computing
Contact Start Stop	Computing
Complex Scripts Sequence	Computing
Content Services Switches	Computing
Cluster Support System	Computing
Command Session Start	Computing
Center Surround Set	Computing
Client Security Software	Computing
Core Security Services	Computing
Core Software Server	Computing
Cyber Security Systems	Computing
Customer Support Systems	Computing
Cybermedia Support Server	Computing
Chip Spread Spectrum	Computing
Client Server Solutions	Computing
Colorful Style Symbols	Computing
Cluster Support Services	Computing
Communications Selector Switch	Computing
Certified Security Solutions	Computing
Client Stateless Server	Computing
Cluster Structured Storage System	Computing
Channel Subsystem	Computing
Common Systems Software	Computing
Customer Service Support	Computing
Critical System Support	Computing
Computer Support Section	Computing
Client Security Solution	Computing
Cell Site Selection	Computing
Cell Site Switch	Computing
Coded Switch System	Computing
Client Support Service	Computing
Collaborative Software System	Computing
Coded Switch Set	Computing
Centralized Service Server	Computing
Cisco Security Specialist	Computing
Client Session Setup	Computing
Common Semantics Syntax	Computing
Common Services Subsystem	Computing
Communications Security System	Computing
Communications Switching Systems	Computing
Computer Service Support	Computing
Connection Successful Signal	Computing
Content Storage System	Computing
Content Security Site	Computing
Customer Service Site	Computing
Customer Switching System	Computing
Conceptual Signaling and Status	Computing
Cyberspace Safety and Security	Computing
Current Synchronization Site	Computing
Cyber Security Summit	Computing
Cyber Security Symposium	Computing
Cyber Security Strategy	Computing
Cyber Security Specialist	Computing
Computer Software Services	Computing
Customer Success Services	Computing
Central Superior Services	Country Specific
CoinSwap Space	Cryptocurrency
College Scholarship Service	Educational Institute
College of St Scholastica	Educational Institute
College of Social Sciences	Educational Institute
Cascade Style Sheet	File Type
Datafile (css - Stats+ - Statistica)	File Type
Coupe Super Sport	General
Context Sensitive Solutions	General
Colorful Style Sheets	General
Connecticut Spring Stamping	General
Citizen Self Service	General
Cetwin System Solutions	General
Contemporary site structure	General
Center for Security Studies	General
Custom Sexy Styles	General
Creative Style Sheets	General
Consolidated Safety Services	General
Centre for Superbug Solutions	General
Cascade Style Sheets	General
Constant Scrambling System	General
Combined Suspension System	General
Complete Sewer Separation	General
Crappy Style Sheet	General
Contorted Style Sheets	General
Custom Style Sheet	General
Chaotic Style Sheet	General
Certified Semen Services	General
Cascading Style Sheetscss	General
Contents Scramble System	General
Car Security System	General
Corvette Super Sport	General
Chrome Side Steps	General
Child Safety Seat	General
Cascar Super Series	General
Chevrolet Super Sport	General
Coil Spring Suspension	General
Caterham Supersport	General
Clarkson Supercar Showdown	General
Cold Start Solenoid	General
City Safe System	General
Crank Speed Sensor	General
Coupe Super Sprint	General
Crash Sensor Safety	General
Crash Safety System	General
Calibration Select Switch	General
Car Sharing Service	General
Car Sharing System	General
Club Simca Suisse	General
Club Sonett Saab	General
Chiron Super Sport	General
Cobalt Ss	General
Cutlass Supreme Sl	General
Car Spy Shots	General
Centerlink Stabilizing System	General
Confetti Scatz System	General
Channel Section Steel	General
Cyclic Steam Stimulation	General
Catalina Sky Survey	General
Cabin Services System	General
Call Sign Similarity	General
Controlled Substance Staff	Governmental
Cab Signal System	Governmental
Cascading Style Sheets	Information Technology
Content-Scrambling System	Information Technology
Closed Source Software	Information Technology
Cross-Site Scripting	Information Technology
Commissione della Sicurezza sociale e della Sanità	International
Civil Service of Pakistan	Internet
Community Service Specialist	Jobs
Closed Substructure Search	Maths
Corrected Sum of Squares	Maths
Canadian Stroke Scale	Medical
Cancer-Specific Survival	Medical
Carotid Sinus Stimulation	Medical
Carotid Sinus Syndrome	Medical
Cause-Specific Survival	Medical
Cavernous Sinus Syndrome	Medical
Certificate of Satisfactory Service	Medical
Children’s Social Services	Medical
Chinese Stroke Scale	Medical
Chronic Sinusitis Survey	Medical
Churg-Strauss syndrome	Medical
Clinical Support System	Medical
Community Support Services	Medical
Cultured Skin Substitutes	Medical
Counter Strike Source	Military and Defence
Central Security Service	Military and Defence
Communications Subsystem	Military and Defence
Coordinator Surface Search	Military and Defence
Combat Service Support	Military and Defence
Combat Server Support	Military and Defence
Comprehensive Smoke Study	Military and Defence
Capability Support System	Military and Defence
Chinese Surface-to-surface	Military and Defence
Confederate States Ship	Military and Defence
Central Secretariat Service	Ministry of Personnel
Circuit-switched Cellular	Networking
Cansei de Ser Sexy	News & Entertainment
Cascading Style Sheet	Programming Language
Curvature Scale Space	Radio Science
Carrier Sense System	Radio Science
Chicago South Shore and South Bend Railroad	Regional
Contractual Service Suppliers	Regional
Core System Software	Softwares
Computer Subsystem	Space Science
Control Stick Steering	Space Science
Core Segment Simulator	Space Science
Calgary Stampede Showband	Sports
Customer Service System	Telecommunication
Cassilandia Airport	Transport & Travel