https://community.extremenetworks.com/t5/network-architecture-design/connect-internet-gb-port-to-wan-isp-on-cisco-1921-router/m-p/13184#M588 I want to upgrade 1841 router with T1 to <A href="http://www.router-switch.com/cisco1921-sec-k9-p-1911.html" target="_blank" rel="nofollow noreferrer noopener">Cisco 1921-SEC/K9 router</A> . Do i need to purchase an HWIC Module or use one of the two internet GB ports as WAN port to ISP ? Wed, 28 May 2014 09:07:00 GMT Lisa098 2014-05-28T09:07:00Z https://community.extremenetworks.com/t5/network-architecture-design/connect-internet-gb-port-to-wan-isp-on-cisco-1921-router/m-p/13184#M588 I want to upgrade 1841 router with T1 to <A href="http://www.router-switch.com/cisco1921-sec-k9-p-1911.html" target="_blank" rel="nofollow noreferrer noopener">Cisco 1921-SEC/K9 router</A> . Do i need to purchase an HWIC Module or use one of the two internet GB ports as WAN port to ISP ? Wed, 28 May 2014 09:07:00 GMT https://community.extremenetworks.com/t5/network-architecture-design/connect-internet-gb-port-to-wan-isp-on-cisco-1921-router/m-p/13184#M588 Lisa098 2014-05-28T09:07:00Z