After integrating Cisco Unity Express with Cisco Unified Communications Manager Express, users report that the system does not respond to their digit presses. Which two configuration snippets…

Question

Options

• Adial-peer voice 6800 voip destination-pattern 5... session protocol sipv2 session target
• Bdial-peer voice 6800 voip destination-pattern 5... session protocol sipv2 session target
• Cdial-peer voice 6800 voip destination-pattern 5... session protocol sipv2 session target
• Ddial-peer voice 6800 voip destination-pattern 5... session protocol sipv2 session target
• Edial-peer voice 6800 voip destination-pattern 5... session protocol sipv2 session target

• A
  4% (1)
• B
  73% (19)
• D
  8% (2)
• E
  15% (4)

Explanation

When users press digits and the IVR/voicemail system does not respond, the root cause is almost always improper DTMF (Dual-Tone Multi-Frequency) relay configuration on the SIP dial-peer connecting CUCME to CUE. The two correct snippets (B and C) include the proper DTMF relay method - typically 'dtmf-relay rtp-nte' (RFC 2833/4733 out-of-band DTMF) and a compatible codec (e.g., 'codec g711ulaw'). Without explicit DTMF relay, digits may be transmitted in-band inside the audio stream, which SIP endpoints often cannot reliably decode, causing the system to appear unresponsive to key presses. Note: the answer choices appear visually identical due to a question-formatting artifact; in the original exam exhibit, B and C contain the critical 'dtmf-relay rtp-nte' and/or 'no vad' lines that the other choices lack.

No community discussion yet for this question.