yes i imagined initially not to use a patch panel because we need an Lc conector at the end an this is going into the transceiver which is plugged into the SFP fiber socket of the HP procurve. the HP porcurve SFP tranceivers is almost 500 euro- so not so cheap. on the other hand I have the AT switch with transceiver(for single mode is 300 $) plugged in with the LC connector of the other end of the fiber. - fiber is a pair of cable in single mode tehnology-
i could have asked to finish the fiber ends in SC also or in patch panel but the problems with transceivers still remains- so patch pannels would have cost only more.