Abbreviations
| 4G | – | Fourth Generation |
| 5G | – | Fifth Generation |
| ADSL | – | Asymmetric Digital Subscriber Line |
| BPO | – | Business Process Outsourcing |
| BSS | – | Billing Support System |
| CAPEX | – | Capital Expenditure |
| CCC | – | Colombo City Centre |
| CDMA | – | Code Division Multiple Access |
| CRM | – | Customer Relationship Management |
| CSP | – | Communication Service Provider |
| DC HSPA+ | – | Dual-Carrier High Speed Packet Access |
| DSP | – | Digital Service Provider |
| EBITDA | – | Earnings Before Interest, Taxes, Depreciation and Amortisation |
| EPF | – | Employees’ Provident Fund |
| ERP | – | Enterprise Resource Planning |
| ETF | – | Employees’ Trust Fund |
| FBB | – | Fixed Broadband |
| FTTH | – | Fibre-To-The-Home |
| FTTN | – | Fibre-To-The-Node |
| Gbps | – | Gigabits per second |
| GRI | – | Global Reporting Initiative |
| GTH | – | Global Telecommunications Holdings |
| HDTV | – | High Definition Television |
| HSPA | – | High Speed Packet Access |
| ICT | – | Information and Communication Technologies |
| ICTA | – | Information and Communication Technology Agency |
| IDD | – | International Direct Dialling |
| IMS | – | IP Multimedia Subsystem |
| INED | – | Independent Non-Executive Director |
| IoE | Internet of Everything | |
| IoT | – | Internet of Things |
| IPTV | – | Internet Protocol Television |
| ISP | – | Internet Service Provider |
| ITU | – | International Telecommunication Union |
| KPI | – | Key Performance Indicator |
| KPO | – | Knowledge Process Outsourcing |
| LED | – | Light Emitting Diode |
| LGN | – | Lanka Government Network |
| LTE | – | Long-Term Evolution |
| MBB | – | Mobile Broadband |
| Mbps | – | Megabits per second |
| MIMO | – | Multiple-Input and Multiple-Output |
| MoU | – | Memorandum of Understanding |
| MPLS | – | Multi Protocol Label Switching |
| NB-IoT | – | Narrowband Internet of Things |
| NBN | – | National Backbone Network |
| NED | – | Non-Executive Director |
| NFV | – | Network Functions Virtualisation |
| NGN | – | Next Generation Network of Sri Lanka |
| OPEX | – | Operating Expenses |
| OSS | – | Operational Support System |
| OTT | – | Over the Top |
| PEO TV | – | Personalised Entertainment Option Television |
| PIOCMA | – | Pacific and Indian Ocean Cable Maintenance Agreement |
| PoP | – | Point of Presence |
| PSTN | – | Public Switched Telephone Network |
| RCS | – | Rich Communications Suite |
| SAFA | – | South Asian Federation of Accountants |
| SDN | – | Software-Defined Networking |
| SEA ME WE | – | South East Asia-Middle East-West Europe |
| SEAIOCMA | – | South East Asia and Indian Ocean Cable Maintenance Agreement |
| SLBN | – | Sri Lanka Telecom Broadband Network |
| SLFRS | – | Sri Lanka Accounting Standards |
| SLIM | – | Sri Lanka Institute of Marketing |
| SME | – | Small and Medium Enterprise |
| SOA | – | Service Oriented Architecture |