Which of the following methods can be used for differentiating between call rights of different users on U1900? (Multiple Choice)

Question

Options

• ACall barring based on password or simple card number
• BRights customization
• CGrouping by call source
• DPassword-based call barring

• A
  72% (28)
• C
  28% (11)

Explanation

On the Huawei U1900 Unified Gateway, call rights differentiation is achieved through password-based call barring (D), card number-based barring (part of A), and rights customization (B) - all of which directly control what each user is permitted to dial. Option A is correct because it combines two distinct mechanisms (password and card number/simple card) into one valid category, while D specifically names password-based barring as a standalone method, both of which the U1900 supports natively. Option B is correct because rights customization allows administrators to assign granular calling privileges per user or user group, making it a core differentiation tool.

Option C (Grouping by call source) is the distractor - call source grouping is a routing/classification feature used to identify where a call originates (e.g., trunk vs. extension), not a mechanism for assigning or restricting individual user call rights.

Memory tip: Think of the three correct answers as "who you are" (rights customization = your profile), "what you know" (password barring), and "what you carry" (card number barring) - all three authenticate or define a user's privileges, while call source grouping describes the call itself, not the user.

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