What version of IOS for CUBE funtionality

[nanosynth]

                   I am setting up  (learning) CUCM7 publisher, Subscriber and Unity on a Dell Poweredge server running VM Ware, thus 3 virtual machines. This will be an IP connection to my 2621XM router acting as CUBE, and then on to the internet from there to my SIP provider. My 2621XM has 130mb of DRAMM and 48mb of Flash. What would be a good IOS version to make it a CUBE for IP to IP gateway and such.

Thanks!

[Chris Deren]

Go with the latest available one for 2621XM, though I don't recall if any version supported CUBE on these routers as CUBE really did not come into play until ISR G1  (28XX) came around, though you should be able to find some 12.4 i.e. 12.4.24T train for you router that has IP-IP functionality.

HTH,

Chris