saw mills in Albany and Columbus. Each mill is configured as a separate Location in Cisco Unified CallManager at HQ. Each Location has been configured with 256 Kbps of voice bandwidth. How many…

The correct answer is B. 10. Cisco Unified CM uses Location-based Call Admission Control (CAC) to limit bandwidth consumption between sites. The G.729 codec produces an 8 Kbps audio stream, but when RTP, UDP, and IP headers are included, each call consumes approximately 24 Kbps of WAN bandwidth (using…

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saw mills in Albany and Columbus. Each mill is configured as a separate Location in Cisco Unified CallManager at HQ. Each Location has been configured with 256 Kbps of voice bandwidth. How many G.729 calls can be placed between Locations simultaneously?

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How the community answered

(28 responses)

A
4% (1)
B
82% (23)
C
11% (3)
D
4% (1)

Explanation

Cisco Unified CM uses Location-based Call Admission Control (CAC) to limit bandwidth consumption between sites. The G.729 codec produces an 8 Kbps audio stream, but when RTP, UDP, and IP headers are included, each call consumes approximately 24 Kbps of WAN bandwidth (using Cisco's standard calculation). With 256 Kbps of voice bandwidth configured per Location: 256 ÷ 24 = 10.67, which rounds down to 10 simultaneous calls. Once 10 calls are active and consuming 240 Kbps, the remaining 16 Kbps is insufficient for an 11th call, so the Location CAC mechanism blocks further calls.

Topics

#G.729#bandwidth#locations#call admission control

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