3 Replies Latest reply on Sep 5, 2013 12:10 PM by noor

    What T1 interface card to use

    jimwhite New Member

      We have three new 1234 switches.  We note these have four slots for interfaces other than Ethernet.  We would like to use them to replace CISCO 1840's in our network which provide a router function between local IP networks and leased T1 lines that connect them in a private network.

      1) Can the 1234 switch with the appropriate plug in module provide router functionality (address translation) between a local IP network and a leased T1?

      2) If so what is the correct plug in device to use to connect to the leased T1 at B8ZS ?



        • Re: What T1 interface card to use
          jayh Hall_of_Fame

          Those are SFP slots for gigabit optical links.  They're Ethernet, but they require an SFP plug-in module typically used for a fiber-optic connection


          Two of them are shared with the two copper RJ-style gigabit interfaces, in other words you can use a copper UTP connection to the conventional plug, or an optical SFP plug-in module, but not both.


          The other two are stand-alone gigabit modules for optical Ethernet links.


          There are a number of SFP modules available for different types of fiber-optic cables, and there's even a RJ-style SFP if you need four gigabit copper connections.  These aren't for T-1 connections, however.


          The 1234 switch has very limited IP routing capability and doesn't support T1 connections.


          The 1335 series switch/router has a NIM slot capable of accepting a variety of modules including those that will support one or two T1 lines as well as full router/firewall/VPN functionality. This would be a good choice for an integrated 24-port switch, router, firewall, and NAT appliance in a 1U space.

            • Re: What T1 interface card to use
              jimwhite New Member

              OK, thanks.


                • Re: What T1 interface card to use

                  jimwhite -

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