Hi, There're two cases of outgoing call: dial from HF or dial from phone. In the first case, some phones may not support enhanced call status (AT+CLCC) to query outgoing number. So we need to pass struct atd_cb_data to fill in the number and type. Later, we invoke AT+CLCC to query phone number and overwrite ours if we are wrong. In the second case, the phone is dialing from phone and we know nothing. So we have to query it through AT+CLCC when callsetup=2. If phone does not support AT+CLCC, we fake a new call for it. --- drivers/hfpmodem/voicecall.c | 219