For entities that enables mapping of clients into the OTN payload. The mode will indicate about the method of OTU-2 Line mapping. Based on that mode the user is able to build his services. none - Module does not support this feature. basicMode - The default mode. In this mode the output payload format is independently configured based on user's request. All known clients are available. extendedMode1 - In this mode the output payload format is configured to Vcat 4xOTU-1 for GFP-T model. The user is able to add fibre-channel and Eth-1G clients. extendedMode2 - In this mode the output payload format is configured to Vcat 4xOTU-1 for GFP-F model. The user is able to add SDI (Video) and Ethernet clients.