00818nam a22001937a#4500001000700000007000300007008004100010020001800051050001000069245013400079260008800213300000900301490010400310490003100414650002200445650001900467650006900486710006900555829219tz180912t        th ||||| |||| 00| 0 tha d  a9786162972539  aH0161  aFront office functional competencies operate a private automatic branch exchange (PABX) switchboardbD1.HFO.CL2.08 Trainee manual  aBangkok :bOffice of the permanent secretary ministry of tourism and sports,c2015.  a58 p  aFront office functional competencies operate a private automatic branch exchange (PABX) switchboard  aTrainee manualvGreen Book  aTelecommunication  aCommunications  aOffice of the permanent secretary ministry of tourism and sports  aOffice of the permanent secretary ministry of tourism and sports