Rob Huffman Wed, 12/09/2009 - 05:34
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Hi Louis,

The direct upgrade path would be CUCM 5.0 > 5.1(3) > 7.1(3a) as shown here;

Cisco Unified Communications Manager Software Compatibility Matrix

Here are some other excellent references;

System Installation and Upgrade Manual for IP Telephony Enterprise and Midmarket

Cisco Unified Communications System Documentation

Cisco Unified Communications Compatibility Tool

Hope this helps! And best of luck!



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