This attribute provides the wavelengths/channels for encoding types on an OMS line. It is a fixed size octet string. Each bit represents an ITU channel. The ITU channel numbers decrement from the MSB of the first octet, 60.5, 60, 59.5, ..., 18, 17.5, 17. Currently we support 96 channels, requiring 96 bits, or 12 characters, to represent the ITU channels for L Band. 0 = ITU channel is not part of specified encoding type 1 = ITU channel is part of the specified encoding type.