Brake levers?

Aye, that's the sort. Maybe I'm wrong but with this set-up the cable itself doesn't get pulled - correct? So is the braking affected by the pushing down of the cable housing on the caliper? If this is the case, am I right in thinking the length of the cable housing has to be very accurate? And do I need a certain type of very rigid cable housing??

Thanks for answering, Hippy.

*Bump - anyone able to answer this?! I could be on the road tomorrow if I can understand and do this!