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?
A. in-band
B. out-of-band
C. gateway
D. channel
Which DTMF method must be configured in resolve the issue?
Wondering if this question also includes the user calling in from cellular phone, could explain why the answer is B.
Enterprise Features From Cellular Networks –>
Enterprise features from cellular networks require out-of-band DTMF.
When using intercluster DNs as remote destinations for an IP phone over a SIP trunk (either intercluster trunk or gateway), check the Require DTMF Reception check box when configuring the IP phone. This allows DTMF digits to be received out of band, which is crucial for enterprise feature access midcall features.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/12_5_1/featureConfig/cucm_b_feature-configuration-guide-1251/cucm_b_feature-configuration-guide-1251_chapter_010.html