Glossary
- T:Test or Time
- T4S:Thomson-CSF / Services et Systemes Sol Spatiaux
- TA:Terminal Adapter (ISDN modem)
- TAS:True Air Speed
- TBC:To Be Clarified or To Be Confirmed
- TBD:To Be Defined or To Be Determined
- TBO:Time Between Outages
- TBS:To Be Studied or To Be Specified by the contractor
- TCP:Transmission Control Protocol
- TCP/IP:Transmission Control Protocol/Internet Protocol
- TE:Test Engineer
- TEB:Tender Evaluation Board
- TEC:Total Electron Content
- TF:Task Force
- TGNSS:NLES reference Time
- TH:True Heading
- TL:Team Leader
- TLM:TeLeMetry
- TLS:Target Level of Safety
- TM:TeleMetry
- TMA:Technique Management Area
- TN-033:Technical Note on EGNOS overlay services
- TN-069:Operation Concept Document
- TOW:Time Of Week
- TPG:Time of Propagation
- TRAC:Traceability Report
- TRB:Test Review Board
- TRO:Time to Restore an Outage
- TRR:Test Readiness Review
- TRSF:Transfer
- TS:Training Segment
- TSE:Total System Error = ( NSE2 + FTE2)1/2
- TSF:Test and Simulation Facilities
- TSO:Technical Standard Order
- TTC:Telemetry, Tracking and Command
- TUE:Test User Equipment
- TWAN:Transport Wide Area Network
- Tx:Transmitter
- TTFF:
Time to first fix