New CISCO3925/K9 Cisco 3925 Router w/SPE100,Interfaces- 3 integrated 10/100/1000 Ethernet ports with 2 ports capable of RJ-45 or SFP connectivity Nov 02, 2015 · sl-19-ipb-k9 IP Base License (Paper) for Cisco 1941, 1921 You can use the security licenses in Table 20 to activate the advanced security features offered on the Cisco 3900, 2900, and 1900 Series platforms. The problem is the item 3900-ZTD-CFG and C3900ISR-CICS-SL is not available yet. My doubts are: •1. What is the mission of the items in the router? •2. No to buy this item affect seriously the working capability of the router? Thanks a lot, Julián. Developing custom networking products for the Telecom Industry for over 20 years, CBM has been an innovator and niche provider of networking solutions.