I am trying to set up a Sco Openserver 5 box to print to a HP Jet direct server via Cisco routers and ISDN. The routers can ping each other but the Sco box doesn't seem to able to initialise the link or communicate over it once it is up. I presume this is because I haven't configured PPP, (the routers are using PPP). Can anyone help me to set this up.