Which modem protocol includes the ability for a modem to generate DTMF tones during a voice call? Is that part of one of these?:
Modem Protocols: ITU-T V.92/K56Flex, ITU-T V.34bis, V.34, V.32bis, V.32, V.22bis, V.22, V.21, V.23 Bell 212A/103, V.80
I need to make sure that the modem I specify for an application has the ability to generate (as directed by the appropriate AT commands) DTMF tones during a voice call.