Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 457

Cisco UCM users with Cisco 8800 series IP telephones require access to a DTMF-based IVR solution. The IVR is connected via SIP through a Cisco Unified Border Element. Which configuration uses in-band signaling for the users’ keypresses?

Answer options

Correct answer: B

Explanation

The correct answer, B (dtmf-relay rtp-nte), specifies the use of RTP payloads to relay DTMF tones, which is classified as in-band signaling. Option A (sip-kpml) is used for out-of-band signaling via SIP, while option C (sip-notify) is for notifications and option D (sip-inband) is not the appropriate configuration for this scenario.