Cisco 3700 Series dial bundles allow enterprise and service provider customers to easily deploy popular Cisco 3700 Series routers as remote-access concentrators and to take advantage of the incredible flexibility these platforms offer. Cisco 3700 Series dial bundles complement Cisco 3600 Series dial bundles, extending the tradition of affordable digital dial capabilities in high-performance modular routers.Cisco 3725 BRI Dial bundle includes NM-12DM, NM-4BRI-S/T, IP IOS.