disc-cause-ext number to string

I am having problems with one NAS, Cisco 3620. It keeps sending me AVPairs that contain only number values, not string. Example: Cisco-AVPair = disc-cause-ext=1045 According to this: http://www.cisco.com/en/US/docs/ios/internetwrk_solutions_guides/splob/guide... 1045 = Received Terminate On that same radius i have few other Cisco NAS-es that send AVPairs with string value. Is there a way to translate this number to string value in a dictionary? I am sorry if this subject was mentioned before. I've spent one hour searching but no success, maybe my search keywords were wrong. Any guidance would be appreciated.