- Install WebAPI by Creomate
- Execute https://{{3CXFQDN}}/webapi/{{AccessKey}}/ext.new?num=300
- Execute https://{{3CXFQDN}}/webapi/{{AccessKey}}/ext.new?num=3000
- Use it as usual
NB. To use it, you need to purchase a
WebAPI for 3CX license according to the number of concurrent calls in your 3CX Phone system.
Disclaimer: This life hack is provided “as is”. Use it solely at your own risk.