SIR
[1] Standard InfraRed[2] Serial InfraRed
[3] Slow InfraRed connection via IrDA 1.0 (max. 115,2kBit/s)
[4] Shuttle Imaging Radar \{Weltraumfahrt\}
[5] Selective Information Retrieval (->""IEEE" Standard Dictionary")
[6] Semantic Information Retrieval (->"IEEE Standard Dictionary")
[7] Statistical Information Retrieval (->"IEEE Standard Dictionary")
[8] Signal-to-Interference Ratio (->""IEEE" Standard Dictionary")
[9] Symbolic Input Routine (->""IEEE" Standard Dictionary")
[10] Substained Information Rate
[11] Software Initiated Restart (->""NASA" Acronym List")
[12] System Interface Requrements (->""NASA" Acronym List")
[13] System Integration Review (->""NASA" Acronym List")
[14] Session Initiation Request