You can use the following tool to view IP phone compatibility with a selected version of CUCM: http://tools.cisco.com/ITDIT/vtgsca/VTGServlet
The required firmware is listed beside each supported phone model. Hope this helps. - Daniel From: cisco-voip [mailto:[email protected]] On Behalf Of Leslie Meade Sent: Wednesday, March 05, 2014 11:29 PM To: cisco-voip ([email protected]) Subject: [cisco-voip] CUCM 10 Phones I know that the 1st gen phones are end of life, but they should still connect to a callmanager 10 environment ? I have a client that wants to upgrade the system, but at this time not willing to upgrade the handsets.
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