Send the following on WhatsApp
Continue to ChatCisco 871ルータの初期化と基本設定 https://servercan.net/blog/2020/08/cisco-871%e3%83%ab%e3%83%bc%e3%82%bf%e3%81%ae%e5%88%9d%e6%9c%9f%e5%8c%96%e3%81%a8%e5%9f%ba%e6%9c%ac%e8%a8%ad%e5%ae%9a/
Cisco 871ルータの初期化と基本設定 https://servercan.net/blog/2020/08/cisco-871%e3%83%ab%e3%83%bc%e3%82%bf%e3%81%ae%e5%88%9d%e6%9c%9f%e5%8c%96%e3%81%a8%e5%9f%ba%e6%9c%ac%e8%a8%ad%e5%ae%9a/