> I couldn't find this information on the site and thought somebody > might know off hand? > > Is the PB-4OC12-SON-MM PIC 1310nm multi-mode or 850nm multi-mode? 1310 according to this URL: http://www.juniper.net/techpubs/hardware/m40e/m40e-pic/sonet-sdh-oc-12.html#sonet-sdh-oc-12 Steinar Haug, Nethelp consulting, sthaug at nethelp.no