csbCurrPeriodicStatsDtmfIw2833InbandCalls 1.3.6.1.4.1.9.9.657.1.3.1.42

This object indicates the number of active calls through this adjacency or account for which DTMF interworking is enabled between DTMF in media via RFC 2833 and DTMF in media via inband DTMF tones during this interval.