Connect our line for calls: ordinary WhatsApp by QR code

This is the quickest way: ordinary WhatsApp works, with no official registration of the number at Meta. The phone with this number is needed once, to scan the code, and then it must stay online.

Dialogs → Channels → line → Connection → Show QR code

1. Open «Channels» and find your line. If it is not there yet, the TehProf.kz administrator adds it after you order — press «+ Add channel» if the button is shown.
2. Press «Connection» and «Show QR code».
3. On the phone open WhatsApp → Settings → Linked devices → Link a device and scan the code.
4. Wait until Dialogs accepts the code and finishes connecting. If the code expired, press «Show a new QR code».
5. Make sure «Take this line's calls in Dialogs» is on for the line and save. More on the settings is in Set up call taking.

Then test: call the line number from another phone and take the call in the browser — how it works.

A detailed walkthrough of connecting by QR, including an expired code and changing the number, is in WhatsApp Web via QR.