Front office functional competencies operate a private automatic branch exchange (PABX) switchboard  D1.HFO.CL2.08 Trainer Guide 

 - กรุงเทพมหานคร :  Office of the permanent secretary ministry of tourism and sports,  2015. 
 - 58 p 
 - Front office functional competencies operate a private automatic branch exchange (PABX) switchboard Trainer Guide  Dark Blue Book .
<br/><br/><label>ISBN: </label>9786162972669 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication<br/>Communications<br/>Office of the permanent secretary ministry of tourism and sports
<br/><br/><label>LC Class. No.: </label>H0246