Help: ICE_IOC_E321
Dual E3 to 16xE1 Demux w/ optional sync
In E321/E1MUX mode, the IOC expects an E3 input stream. The stream is
processed for E3 sync. If found, four E2 streams are extracted. These
in turn are processed for sync and four E1s extracted from each E2. The 16
E1s are processed for sync and output on frame boundaries. E1 data is copied
to the host buffer in 32 bit packed words, each with a channel designator.
The host then demultiplexes the 32 bit data words to the appropriate output.