This read-write integer, from 0 to 9999, selects the country whose telephony signaling standards, ring, dial tone, ringback, and busy tone, are generated by the unit's NetVoice card. An administrator sets this to match the physical location of the deployed NetVoice card so callers hear locally correct tones. For example, deploying a NetVoice card in a country with different ring cadence standards than the factory default requires setting this value so local phones ring and beep the way callers expect.