I can't picture a place where I would do this, but assuming that there is some logical reason that a more robust solution such as a rod or HSS tension member cannot be used, you will want to look into catalogues for cable connections. These are typically done for guy-wire anchoring and other such specialist applications. Be careful as I have yet to see such a catalogue with data to limit states design (LRFD); I believe you're going to have to be working stress design for your connections.
Good luck,
YS
B.Eng (Carleton)
Working in New Zealand, thinking of my snow covered home...