Which two statements are true regarding Full and Half call model processing? (Choose two.)

Question

Options

• AAvaya Aura® Session Manager (SM) always performs Half call model processing.
• BAvaya Aura® Communication Manager (CM) configured as a Feature Server performs Full call
• CAvaya Aura® Communication Manager (CM) configured as an Evolution Server performs Full call
• DAvaya Aura® Session Manager (SM) always performs Full call model processing.

• A
  87% (62)
• C
  8% (6)
• D
  4% (3)

Explanation

A is correct because Session Manager acts as a SIP Back-to-Back User Agent (B2BUA) that processes each call leg independently - it never anchors the full call, making Half call model its permanent behavior. B is correct because a CM Feature Server must anchor the entire call to deliver telephony features (like coverage or bridging), which by definition is Full call model processing.

C is wrong because CM configured as an Evolution Server uses Half call model for SIP endpoints - it works alongside Session Manager rather than anchoring both call legs itself. D is wrong because it directly contradicts A; SM always performs Half (not Full) call model processing.

Memory tip: Think of it this way - a Feature Server needs the Full picture to deliver features (Full = Feature Server), while Session Manager just manages sessions one leg at a time (Half = SM, always).

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