The attached config used for trial subscription only. It was created on a Cisco 2901 with IOS version 15 installed which has a EHWIC-4ESG(wic). It probably has the same Hardware architectures as the Cisco 1921 you ordered. Please paste the attached config parameters on the Cisco 1921. After you have done this, please send Cisco 1921's config to me. I will check it and send a completed config back to you.if you encounter problems , please feel free to ask any questions.
P.S. Please download IOS Version 15.2 from Cisco systems website using CCO account.