A new deployment is using MVA for a specific user on the sales team, but the user is having issues when dialing DTMF. Which DTMF method must be configured in resolve the issue?

The correct answer is B. out-of-band. Mobile Voice Access (MVA) is a Cisco Unified Mobility feature that allows mobile users to place enterprise calls from their mobile phones by calling into a voice gateway and navigating an IVR using DTMF tones. For MVA to correctly detect and process DTMF digits entered by the use

Cisco Unified Communications Manager Mobility

Question

A new deployment is using MVA for a specific user on the sales team, but the user is having issues when dialing DTMF. Which DTMF method must be configured in resolve the issue?

Options

Agateway
Bout-of-band
Cchannel
Din-band

How the community answered

(52 responses)

A
8% (4)
B
73% (38)
C
15% (8)
D
4% (2)

Explanation

Mobile Voice Access (MVA) is a Cisco Unified Mobility feature that allows mobile users to place enterprise calls from their mobile phones by calling into a voice gateway and navigating an IVR using DTMF tones. For MVA to correctly detect and process DTMF digits entered by the user after the call is connected, DTMF must be sent out-of-band (typically RFC 2833/RTP Named Telephony Events). Out-of-band DTMF transmits tones as separate RTP event packets rather than as audio in the voice stream, ensuring reliable digit detection by the gateway's IVR system. In-band DTMF embeds tones within the audio stream and is susceptible to codec compression distortion, making digit detection unreliable. 'Gateway' and 'channel' are not valid DTMF method options for this context.

Topics

#MVA#DTMF#Out-of-band signaling#CUCM Mobility

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