Unit 1 : PENSUAISAN DAN PENGISYARATAN TELEFON Unit 1 :TELEPHONE SWITCHING AND SIGNALLING 1 Interprete and describe the basic principles and functions of exchange. Recognize…
Unit 1 : PENSUAISAN DAN PENGISYARATAN TELEFON Unit 1 :TELEPHONE SWITCHING AND SIGNALLING 1 Interprete and describe the basic principles and functions of exchange. Recognize…