The Cisco 4000 Series Integrated Services Routers (ISR) revolutionize WAN communication in the enterprise branch. With new levels of built-in intelligent capabilities and convergence, the routers specifically address the growing need for application-aware networking in distributed enterprise sites. These locations tend to have lean IT resources. But they often also have a growing need for direct communication with both private data centers and public clouds across diverse links, including Multiprotocol Label Switching (MPLS) VPN and the Internet.

The DTD-ISR-4331-01-L1 is a TEMPEST Integrated Service Router based on the Cisco 4331. The unit have 2 routed ports and 16 switch ports for a total 18 network ports in all. The CIS Secure DTD-ISR-4331-01-L1 provides SC Fiber for all Ethernet connections which are presented on the outside of the enclosure.