300-070 · Question #318
Unicast MOH is configured for a cluster in a single-site network. Which provides the best possible MOH clarify for callers?
The correct answer is D. G.722. G.722 is a wideband audio codec that provides HD voice quality with an audio bandwidth of up to 7 kHz, compared to the 3.4 kHz of narrowband codecs like G.711. In a single-site network, there are no WAN bandwidth constraints, so the higher bandwidth requirements of G.722 (64…
Question
Unicast MOH is configured for a cluster in a single-site network. Which provides the best possible MOH clarify for callers?
Options
- AG.729A
- BG.711 mu-law
- CiLBC
- DG.722
How the community answered
(41 responses)- A2% (1)
- B2% (1)
- C5% (2)
- D90% (37)
Explanation
G.722 is a wideband audio codec that provides HD voice quality with an audio bandwidth of up to 7 kHz, compared to the 3.4 kHz of narrowband codecs like G.711. In a single-site network, there are no WAN bandwidth constraints, so the higher bandwidth requirements of G.722 (64 kbps) are not a concern. This makes G.722 the best choice for Music on Hold (MOH) quality. G.711 mu-law is standard quality but only narrowband. G.729A uses compression that degrades audio fidelity, making it unsuitable for high-quality MOH. iLBC is also a narrowband codec with lower quality than G.722. G.722's superior frequency range delivers the most natural and clear audio experience for callers on hold.
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