Refer to the exhibit. All calls from site A to site B are failing, and the issue has been identified as a media negotiation problem. Which configuration change resolves this issue?

Question

Options

• AIncrease the bandwidth allowance between the RTP_Reg and SJ_Reg regions to 64 kbps.
• BEnable Early Offer on the SIP trunk.
• CCreate a new audio codec preference list with G.711 U-law 64k as the highest priority and apply it to RTP_Reg and SJ_Reg.
• DDisable G.722 on all devices at both sites.

• A
  14% (4)
• B
  3% (1)
• C
  76% (22)
• D
  7% (2)

Explanation

A media negotiation failure between two regions in CUCM typically means the two regions share no common codec in their configured Audio Codec Preference Lists (ACPLs). In the exhibit, RTP_Reg and SJ_Reg likely have incompatible or missing codec configurations. Creating an ACPL that includes G.711 U-law 64k (a universally supported codec) as the highest priority and applying it to both regions ensures a common codec exists for negotiation, resolving the failure. Option A (increasing bandwidth) addresses capacity but not codec mismatch. Option B (Early Offer) changes SIP offer timing and does not fix codec incompatibility. Option D (disabling G.722) removes a higher-quality option but does not guarantee a common codec is present across both regions.

No community discussion yet for this question.