I have a Grandstream DP715 DECT phone I am trying to configure with 3CX, I followed this guide from the 3CX website: https://www.3cx.com/blog/ip-phone-configuration/provisioning-gs-dp710-dp715-dect/ but when I get to selecting the model to provision it, the model is not listed as it is in the guide. Is there a way to add this model in? can I download the template from anyway to add? can I use a different model and get basic call functionality? As a last resort, could I provision this manually? Any help greatly appreciated! Edit: I manually pointed it at the server in the advanced settings on the web interface, then under handset set the username and password as defined on the extension, and it works. No phonebook but as a public usage phone it can make and receive calls, which seems as good as I can get. No auto-provisioning though.