@cfg_get.<group_name>.<var_name> is documented
[sip-router] / utils /
drwxr-xr-x   ..
drwxr-xr-x - fifo_relay
drwxr-xr-x - gen_ha1
drwxr-xr-x - route_graph
drwxr-xr-x - sercmd
drwxr-xr-x - serunix
drwxr-xr-x - sipgrep