MS-721 Practice Question 3378
Exam: MS-721
Domain: Configure and manage Teams Phone
Difficulty: medium
Which codec does Microsoft Teams use by default for high-definition audio across PSTN gateways supporting wideband voice?
Answer Options
A
G.722 for wideband HD voice and G.711 for standard narrowband
B
MP3 at 320 Kbps bitrate exclusively
C
FLAC lossless audio compression
D
WAV uncompressed PCM files
Correct Answer
A: G.722 for wideband HD voice and G.711 for standard narrowband
Explanation
G.722 is commonly negotiated as the wideband audio codec for high-definition voice over Direct Routing SBCs, while G.711 (PCMA/PCMU) is used for standard narrowband PSTN.