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vincent_pijen vincent_pijen
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6 years ago
Which of the following requires a switchboard for incoming and outgoing calls?
 
  A. PABX
   B. Centrex
   C. Telex
   D. PBX
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warm z.warm z.
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6 years ago
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vincent_pijen Author
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#2
6 years ago
This calls for a celebration Person Raising Both Hands in Celebration
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