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350-801 · Question #218

What are two differences between media flow-around and media flow-through on cisco unified Border element? (Choose two.)

The correct answer is A. When using media flow-through, the call signaling and media are passed through the Cisco C. When using media flow-around. the call signaling goes through the Cisco Unified Border Element,. Media flow-through on a Cisco Unified Border Element (CUBE) involves both call signaling and media traversing the CUBE, whereas media flow-around routes only call signaling through the CUBE while media flows directly between endpoints.

Voice Gateways and Session Border Controllers

Question

What are two differences between media flow-around and media flow-through on cisco unified Border element? (Choose two.)

Options

  • AWhen using media flow-through, the call signaling and media are passed through the Cisco
  • BWhen using media flow-through, the call signaling goes through the Cisco Unified Border
  • CWhen using media flow-around. the call signaling goes through the Cisco Unified Border Element,
  • DWhen using media flow-around, both call signaling and media do not go through the Cisco Unified
  • EWhen using media flow-through, call signaling goes through the Cisco Unified Border Element but

How the community answered

(52 responses)
  • A
    94% (49)
  • B
    2% (1)
  • D
    4% (2)

Why each option

Media flow-through on a Cisco Unified Border Element (CUBE) involves both call signaling and media traversing the CUBE, whereas media flow-around routes only call signaling through the CUBE while media flows directly between endpoints.

AWhen using media flow-through, the call signaling and media are passed through the CiscoCorrect

In media flow-through mode, CUBE acts as a back-to-back user agent (B2BUA) for both signaling and media, meaning all call signaling messages and the actual voice/video media streams traverse through the CUBE.

BWhen using media flow-through, the call signaling goes through the Cisco Unified Border

While call signaling goes through CUBE in flow-through mode, this option is incomplete as it misses that media also flows through the CUBE, making option A more accurate and comprehensive.

CWhen using media flow-around. the call signaling goes through the Cisco Unified Border Element,Correct

In media flow-around mode, the Cisco Unified Border Element (CUBE) still handles all the call signaling to establish and tear down the call, but once the call is set up, the media stream flows directly between the endpoints without passing through the CUBE.

DWhen using media flow-around, both call signaling and media do not go through the Cisco Unified

This is incorrect; in flow-around, signaling *does* go through CUBE, only media does not.

EWhen using media flow-through, call signaling goes through the Cisco Unified Border Element but

This statement describes the characteristics of media flow-around, not media flow-through, and directly contradicts the definition of flow-through.

Concept tested: CUBE media flow-through vs. flow-around

Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab12/collab12/cube.html

Topics

#Cisco Unified Border Element (CUBE)#Media Flow-Around#Media Flow-Through#Session Border Controller (SBC)

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