How make command for configurate network

Installing and Using OpenWrt Network and Wireless Configuration
1

hello where is tap this command i'm lost , i would like replace my router isp orange in france to modem bt home hub 5A is possible you think ?

thanks

In France with Orange a VDSL2 connection is over pots, with PTM protocol, and on vlan 835. so here is my network config file:

config dsl 'dsl'
	option annex 'a'
	option tone 'av'
	option xfer_mode 'ptm'
	option line_mode 'vdsl'

config interface 'wan'
	option ifname 'ptm0.835'
	option proto 'pppoe'
	option username 'fti/******'
	option password '********'
	option ipv6 '0'
	option mtu '1492'

config device 'wan_dev'
	option name 'ptm0'