Howto:FXS FXO trunk with IP22 media gateway and Cisco 1700 router - innovaphone-wiki
Example for Configuring the Headquarters (Cisco Router) to Manage Branches Using Efficient VPN and Establishing IPSec Tunnels - AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 CLI-based Typical Configuration Examples -
Cisco AS5300 Universal Gateway Router
New SD-WAN-Infused Cisco Catalyst Line Targets Edge, 5G Use Cases