any programmatic way to add contact records into 3CX?

[PatrickS]

I'm planning to do a test with the maximum contacts supported by 3CX. The only way I know to import a huge number of contacts is through import CSV file.

It's better to have a programmatic way to add contacts, any hints?

 

[eddv123]

As you have already stated you can use a .CSV file for importing contacts - this is what I would do.

The other options are Office 365, LDAP or ODBC servers.

 

[VoIPTools]

Or Call Control API. But that's a lot of work. Far easier to just import a huge CSV file.