Register Cisco 7811 with asterisk

hi all
I have a asterisk pbx and some cisco phone 7811, i want to config on some this phone
I know we must use file config and update it to phone by tftp but I can’t find example on internet
I need a template file, so what anybody can sent me a template, please
Thanks all

please use ip of the phone in browser to setup Phone lines.

Sorry ahassan
But this web phone of this seri phone only have information of device, it doesn’t have config part