Hi,
Thanks for the explanation.
So you are using the "serial data" and some information into the "extra data".
For the QRCode, I will recommend you to use the "dynamic text" container and give him this for the display content:
About the serial, you should have some like that during the export
"id";"serial_data";"pack";"serial_extradata"
308;"999999999,aiAVvaw3";"withQR";"a:1:{s:3:""crc"";s:34:""999999999:aiAVvaw3@GATEIP-QR-PHONE"";}"
The extra data is a serialized PHP array. It allow you to store a lot of information with the serial without having to create new columns in the database.
The plugin "attach serial" support the extra data and thankx to the link above, you can see how to access to a special extradata (using is namekey).
Hope these explanations will help you.
Do not hesitate to ask for precision if require.
Regards,