Operational Infrastructure
Sub-Categories:
- Aerial Installations
- Cable Route Works *
- Cable Supplying & Laying *
- Cellular Telephones
- Closed Circuit Television Systems *
- Lineside Telephony Schemes *
- Maintenance & Facilities Management
- Pagers & Accessories
- Radio Communication Schemes
- Radio Equipment *
- Repair & Post Design Engineering
- Signal Post Telephone Schemes
- Station Clock Systems - Design, Supply etc.
- Switching Equipment & Assoc. Systems
- Telecoms Bearer Circuits *
- Telephone Exchanges
- Telephone Key Systems
- Telephones & Accessories
- Transmission Equipment (Telecoms)