Hi just purchased a 7915 Expansion module for a Cisco 7971 phone for our front office receptionist. I've done some reading and I'm a little confused about the firmware loads. We are using CME version 7.1. The current phone load for the 7971 is "load 7971 SCCP70.8-2-2SR2S". I've read that I need to change this to version 8.3(5) or later.
I've never upgraded the firmware so I downloaded the newest load for the 7970 however, it has a bunch of files in the zip files such as:
Do I need to TFTP all of these files to the flash and make them available to the TFTP server? Which file should I reference under the telephony-service command?
Since there are already firmware, load files, and default files for the 7971 phone should I uninstall these files before uploading the new 7971 files? Most of the sbn, and load files have diffrent names with the exception of the exsiting default load file is named the same as the new default load file. Example below:
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