This object indicates the associated DS0's which have been assigned to the specified physical port interface. All available DS0 channels are automatically allocated in unstructured mode. In structured mode, the DS0 channels are bit-coded with each bit representing one DS0 channel. The following are some examples: Value Representation 0x00000002 DS0-1 has been allocated to this port 0x000007f0 DS0-4 to DS0-10 have been allocated to this port 0x00027004 DS0-2, DS0-12 to DS0-14, DS0-17 have been allocated In E1 structured voice mode, the bit fields correspond to telephone channels and are automatically mapped to it's associated DS0 channel. Valid telephone channels range from 1 to 30.