Hi:
1) set loadzone=your country, defaultzone=your country in /etc/dahdi/system.conf
2) set country=your country in /etc/asterisk/indications.conf
3) load driver with your country code:modprobe opvxa1200 opermode=YOUR COUNTRY
4) set this in chan_dahdi.conf
cidstart=ring
cidsignaling=dtmf
usecallerid=yes
if it still has issue, you can check whether your PSTN line is provided with caller ID function.
It also still shows blank clid and source in FreePBX report.
1) set loadzone=your country, defaultzone=your country in /etc/dahdi/system.conf
2) set country=your country in /etc/asterisk/indications.conf
3) load driver with your country code:modprobe opvxa1200 opermode=YOUR COUNTRY
4) set this in chan_dahdi.conf
cidstart=ring
cidsignaling=dtmf
usecallerid=yes
if it still has issue, you can check whether your PSTN line is provided with caller ID function.