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350-801 · Question #356

What are two Cisco UCM location bandwidths that are deducted when G.729 and G.711 codecs are used? (Choose two.)

The correct answer is C. If a call uses G.711, Cisco UCM subtracts 80k D. If a call uses G.729, Cisco UCM subtracts 24k. Cisco UCM's location-based Call Admission Control (CAC) deducts bandwidth based on the codec in use, including IP/UDP/RTP packet overhead - not just the raw audio payload. For G.711 (64 kbps audio payload), UCM deducts 80 kbps total (Option C), accounting for approximately 16…

Infrastructure and Quality of Service

Question

What are two Cisco UCM location bandwidths that are deducted when G.729 and G.711 codecs are used? (Choose two.)

Options

  • AIf a call uses G.729, Cisco UCM subtracts 16k.
  • BIf a call uses G.711, Cisco UCM subtracts 64k
  • CIf a call uses G.711, Cisco UCM subtracts 80k
  • DIf a call uses G.729, Cisco UCM subtracts 24k.
  • EIf a call uses G.729, Cisco UCM subtracts 40k

How the community answered

(42 responses)
  • A
    2% (1)
  • C
    95% (40)
  • E
    2% (1)

Explanation

Cisco UCM's location-based Call Admission Control (CAC) deducts bandwidth based on the codec in use, including IP/UDP/RTP packet overhead - not just the raw audio payload. For G.711 (64 kbps audio payload), UCM deducts 80 kbps total (Option C), accounting for approximately 16 kbps of network overhead. For G.729 (8 kbps audio payload), UCM deducts 24 kbps total (Option D), again including overhead. Option A (16k for G.729) and Option B (64k for G.711) are incorrect because they ignore overhead. Option E (40k for G.729) does not correspond to any standard Cisco UCM deduction value.

Topics

#Cisco UCM Locations#Codec Bandwidth#G.711#G.729

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