For the U1900, which of the following statements is CORRECT about the prefix?

Question

Options

• AThe basic service prefixes can be classified into two types: intra-office prefix and outgoing prefix.
• BAn intra-office prefix is the one used for calls between extensions within the same enterprise.
• CSince prefix 28 contains prefix 289, the system regards 28 as the prefix in the called number
• DA prefix must map an office route selection code.

• A
  77% (23)
• B
  7% (2)
• C
  13% (4)
• D
  3% (1)

Explanation

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