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 to be aware of.

In brief, there were 4 main steps:

  1. Backup the current configuration and data.
  2. Download and install the upgrade package.
  3. Migrate licences to CSL.
  4. Sort out the Message Waiting Indicator (MWI).

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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 of times.

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