| Name | Data Type | Qualifiers |
| Name | Data Type | Value | Scope | Flavors |
| Algorithm | uint16 |
| Description | string | The Algorithm is an enumeration that designates the IPCOMP compression algorithm to use. OUI designates a vendor-specific algorithm. | None | TRANSLATABLE= true |
| ValueMap | string | 1, 2, 3, 4 | None | None |
| Values | string | OUI, DEFLATE, LZS, V42BIS | None | TRANSLATABLE= true |
| DictionarySize | uint16 |
| Description | string | DictionarySize is an optional field that specifies the log2 maximum size of the dictionary. | None | TRANSLATABLE= true |
| PrivateAlgorithm | uint32 |
| Description | string | Private compression algorithm, used when TransformId is OUI. | None | TRANSLATABLE= true |