With LightSand ability to transport CTC data using the same FICON equipment for FICON and Layer 2 channels, it's no longer necessary to have a dedicate channel path (CHPID) resources to the CTC function.
LightSand i-7100F FICON extension gateways used to extend FICON channel over the MAN/WAN. IBM equipment included IBM Tape Libraries 3494, VTS PtP B20 and zSeries servers. Additional equipment included ESS-800 storage subsystems and enterprise class Ethernet switches. The effective extension distance is 44km.