About the voice mailbox service, which of the following statements are correct? (Multiple Choice)

Question

Options

• AAll the U1900 series gateway have built-in voice mail box.
• BUser can transfer the VMS message on the IP phone
• CThe U1980 needs to work with the UMS server to implement the voice mailbox function.
• DAll the U1900 series gateway can work with the UMS server to implement the voice mailbox

• A
  14% (3)
• B
  10% (2)
• C
  76% (16)

Explanation

C is correct because the U1980 lacks a built-in voice mailbox and must integrate with an external UMS (Unified Messaging Server) to provide that functionality - it's a hardware limitation specific to the U1980 model.

D is correct because while not all U1900 models have built-in voicemail, the entire U1900 series supports integration with a UMS server as an external voicemail solution, giving all models that capability through software/server pairing.

A is wrong because only some U1900 gateways have built-in voice mailboxes - the U1980 notably does not, so "all" is too strong a claim.

B is wrong because users cannot directly transfer VMS (Voice Mail System) messages from an IP phone; message management goes through the VMS/UMS interface, not the phone's transfer function.

Memory tip: Think of it as two tiers - some U1900 models are "self-sufficient" with built-in voicemail, but the U1980 is the exception that needs UMS support. Since all models can use UMS, D is always safe; since not all have built-in boxes (U1980 can't), A always fails.

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