How to understand xconnect on cisco 881 and 880?

Question

Cisco

There are 2 ciscos in front of me.
How to set up xconnect between 2 ports?
xconnect registered on WAN. Cisco has connected the interfaces through the LAN so far, the route has been prescribed.
Debug alternates with errors
"No config found for remote peer Cisco-1, local/remote address 192.168.10.66/1.1.1.1"
"No config found for remote peer Cisco-2, local/remote address 172.16.4.138/2.2.2.2"
R1
l2tp-class l2tp-defaults
retransmit initial retries 30
cookie size 8
pseudowire-class ether-pw
encapsulation l2tpv3
protocol none
ip local interface Loopback0
interface FastEthernet4
description Inet
no ip address
duplex auto
speed auto
no cdp enable
xconnect 192.168.10.66 1 encapsulation l2tpv3 manual pw-class ether-pw
l2tp id 111 222
l2tp cookie local 4 12345
l2tp cookie remote 4 54321
l2tp hello l2tp-defaults