UC520 Models Upgrades and Trade In

Unanswered Question
May 19th, 2009

>> Cisco team

>> A customer of ours purchased a 16-user UC500 (UC520-16U4FXO-K9) about a year ago.  They now have 22 phones attached and need more licenses for more phones.  I hear that Cisco has anncd the ability to upgrade the 16 user system past this point and would appreciate info about how to do it.

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Jennifer Blatnik Tue, 05/19/2009 - 13:49

Yes, it is possible to upgrade a UC520 16U desktop system to a UC520 24U rackmount system by doing a trade in of the hardware known as the Technology Migration Program (TMP).  Unfortunately there is no way to upgrade the desktop system past the given 16Users it was currently designed for.  You can find more information about TMP here:


For user license upgrades on the same UC520 chassis, refer to this page: