| Titel | ISBN-13 (ISBN-10) | Erscheinungsjahr |
|---|---|---|
| Voice over IP | 978-3-89981-857-4 (3-89981-857-1) | 2007 |
Action Training Systems · HIGH TECH SYSTEMS · HIGH TECH SYSTEMS S.A.R.L · P.D.T.Systems · Performance Training Systems · Power Engineering Training Systems · T.S. · The Complex Systems Modelling Group (CSMG) · TRANS Fiction Systems Corp. · Trishna Knowledge Systems · Universal Training Systems · Universal Training Systems Co.