Communications Controller for Linux

Communications Controller for Linux (Communications Controller for Linux on System z or CCL) is an IBM software product announced in 2005 that runs under Linux on IBM Z and emulates an IBM 37xx communications controller.

"[1] CCL supports Ethernet and Token Ring local area network (LAN) connectivity directly, and other connectivity through a DLSw router.

X.25 requires IBM's NPSI software plus a third party package.

[2] According to IBM figures, CCL offers the performance of an "average 3745.

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