[1] Patterns of Test Cases

[2] Personal Telecommunication Center

[3] Pacific Telecommunications Council (->"IEEE Standard Dictionary")

[4] Passive Thermal Control (->"IEEE Standard Dictionary") (->"NASA Acronym List")

[5] Positive Temperature Cöfficient (->"IEEE Standard Dictionary")

[6] Programmed Transmission Control (->"IEEE Standard Dictionary")

[7] Post & Telecommunications Corp. - Fermeldebehörde Sambias (->"Lexikon der Text- und Datenkommunikation")

[8] Port Alice, AK, USA -internationale Fughafen-Kennung.