Upgrading Cisco Unity Express

I recently upgraded an NME-CUE (Cisco Unity Express Enhanced Network Module) from version 3.2.1 to 8.6.7. This module was moving from a 3845 router (running CUCME 7.1) to a 3945 router (running CUCME 10.5), so these versions match the compatibility matrix. On the whole, this went fairly smoothly, but there are a couple of issues …

How to short-circuit a network…

Most modern networks use a star topology: each computer plugs into a separate port on a switch, either directly or via a patch panel, and larger networks will have multiple switches connected together. However, what happens if you plug both ends of a patch cable into the same switch? I’ve encountered this situation a couple …