Working on this interesting problem right now. When I set each extension's BLFs, I can pull up a provisioning template via the web browser: https://[realFQDN].3cx.us/provisioning/38t[edited]qq9/cfg[MAC] if I set the BLF keys to line, or speed dial. BUT if I set them to BLF, I can't get the provisioning template anymore and consequently, the phones don't get provisioned properly. Phones are GXP-2170 with a custom template. I can set hardcode BLF directly in the custom template and it works fine. Are there logs kept to show why 3CX won't generate the configuration file if BLF is selected? Thanks.