H11-811 · Question #185
The U1900 main control board provides the following functions() (Multiple Choice)
The correct answer is A. Generating original CDRs B. Processing and converting protocols such as SIP and H.248 D. TDM switching. Options A, B, and D are correct because the U1900 main control board handles call control-level functions: it generates original Call Detail Records (CDRs) for billing and logging (A), processes and converts signaling protocols like SIP and H.248 to enable interoperability…
Question
The U1900 main control board provides the following functions() (Multiple Choice)
Options
- AGenerating original CDRs
- BProcessing and converting protocols such as SIP and H.248
- CVoice codec standards such as G.711 and G.723
- DTDM switching
How the community answered
(45 responses)- A78% (35)
- C22% (10)
Explanation
Options A, B, and D are correct because the U1900 main control board handles call control-level functions: it generates original Call Detail Records (CDRs) for billing and logging (A), processes and converts signaling protocols like SIP and H.248 to enable interoperability between different network elements (B), and performs TDM switching to route time-division multiplexed circuit traffic (D).
Option C is wrong because voice codec processing (G.711, G.723, etc.) is computationally intensive media-plane work handled by dedicated DSP/media processing boards, not the main control board. The main control board operates at the signaling and control plane, not the media/voice encoding layer.
Memory tip: Think of the main control board as the "brain" of the U1900 - it thinks (protocol logic/SIP/H.248), records (CDRs), and routes (TDM switching). Codecs are "muscle" work - heavy audio processing delegated to specialized media boards. If a function involves raw audio encoding/decoding, it belongs on a media board, not the main control board.
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