Cisco 400-051 Exam

Which statement about G.722.1 codec support on Cisco Unified Communications Manager is true?

  • A. It is always preferred by Cisco Unified Communications Manager over G.711.
  • B. It is a high-complexity wideband codec.
  • C. It operates at bit rates of 15.2 and 13.3 kb/s.
  • D. It is supported for SIP and SCCP devices.
  • E. It is supported for SIP and H.323 devices.
Answer: Option E.

G.722.1 is a low-complexity wideband codec operating at 24 and 32 kb/s. The audio quality approaches that of G.722 while using at most half the bit rate. As it is optimized for both speech and music, G.722.1 has slightly lower speech quality than the speech-optimized iSAC codec. G.722.1 is supported for SIP and H.323 devices.

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