This is received as a HEX value from TL1. The ranges are 0..FF. Since HEX can not be represented in ASN.1, a string is used. For SET operations, the user can enter any valid HEX value from the range 0x0 to 0xFF. The values can be entered with or without a preceding zero: i.e. 0 and 00 are equivalent. The agent shall only verify the length of the input string is 1 or 2. Values like WX are valid strings but not valid HEX and shall be rejected by the NE TL1 command not the agent. This variable is available upon GET-EXACT operations. No value is returned with GET-NEXT.