| Access Services (AS) | Accounts | AI&DIU |
| Asset Management (AM) | Budget & Public Enterprise Finance (B&PEF) | Building Works(BW) - Electrical |
| Capacity Building and Training | Carrier Services (CS) | Coordination & Administration (C&A) |
| Data Services (DS) | Disaster Management (DM) | Economic Research Unit (ERU) |
| Establishment (Estt.) | Finance | Foreign Investment Policy & Promotion - FIPP |
| Foreign Training Notifications | G-20 Secretariate | Information Technology (IT) |
| International Cooperation (IC) | International Relations (IR) | Joint Secretary - Administration |
| Joint Secretary - Telecom | Licensing Finance Accounts (LFA) | Licensing Finance Policy (LFP) |
| Networks & Technologies (NT) Cell | NIC-DOT DoT HQ | Personnel |
| Project Management (PM) | Public Grievance (PG) | SATCOM Monitoring Centre - SMC |
| Satellite Communications Division | Security Assurance (SA) | Service Unit (SU) |
| Skill Development (SD) | Staff Relations and PHP | Staff, Establishment and Administration - SEA |
| Standards-R&D-Innovation (SRI) | Vigilance Division | Wireless Planning & Coordination (WPC) |
| Wireless Planning & Finance (WPF) | | |
दूरसंचार विभाग
