[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