Function switch_core_session_send_dtmf_string

pub unsafe extern "C" fn switch_core_session_send_dtmf_string(
    session: *mut switch_core_session_t,
    dtmf_string: *const c_char,
) -> switch_status_t

\brief Send DTMF to a session \param session session to send DTMF to \param dtmf_string string to send to the session \return SWITCH_STATUS_SUCCESS if the dtmf was written