Which three statements about media-processing resources (DSPs) are true? (Choose three.)

Question

Options

• ATwo-party calls originated by SIP stations or trunks, and terminated by H.323 trunks, media
• BTwo-party calls originated by H.323 stations, trunks, or media gateways, and terminated by SIP
• CSIP-SIP two-party calls will always use SIP Direct Media if Communication Manager (CM) is
• DH.323-H.323 two-party calls will always shuffle to establish a direct media path if CM is configured
• EIf a direct media path cannot be established between two IP endpoints the call will fail from

• A
  28% (16)
• B
  57% (33)
• E
  16% (9)

Explanation

B, C, and D are correct because they accurately describe how Avaya Communication Manager handles media paths for same-protocol and mixed-protocol calls. H.323-originated calls terminated by SIP endpoints (B) require DSP resources because media must be bridged across two different signaling protocols - neither endpoint can establish a direct path alone. When CM is properly configured, SIP-to-SIP calls will always invoke SIP Direct Media (C) and H.323-to-H.323 calls will always shuffle (D) to create a direct media path, both eliminating the need for a DSP entirely.

Option A is wrong because the full statement implies that SIP-originated/H.323-terminated calls behave differently from the reverse direction (B), when in fact both mixed-protocol call flows require DSP resources for media interworking - the originating protocol side doesn't change this requirement.

Option E is wrong because it incorrectly states the call fails when direct media cannot be established. In reality, CM falls back to using a DSP to bridge the media - the call succeeds using a media resource rather than collapsing.

Memory tip: Think "Same = Shuffle/Direct, Mixed = DSP" - same-protocol pairs (SIP↔SIP, H.323↔H.323) go direct; mixed-protocol pairs always need a DSP middleman. And DSPs are a fallback, never a failure point.

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