3 and 4 digit extensions on one 3CX using WebAPI

  1. Install WebAPI by Creomate.
  2. Create extensions 300 and 3000 with the two WebAPI requests below.
  3. Use them as usual.

NB. To use it, you need a WebAPI for 3CX license according to the number of concurrent calls in your 3CX Phone system, or a free 15-day trial. Request format: WebAPI documentation.

Disclaimer: This life hack is provided “as is”. Use it solely at your own risk.
GET https://{{3CXFQDN}}/webapi/{{AccessKey}}/ext.new?num=300
GET https://{{3CXFQDN}}/webapi/{{AccessKey}}/ext.new?num=3000

Screenshots