hp 75000 mainframe for sale w/ following modules: _ e1405a command module _ e1679a sonet/sdh timing reference (shown in photo but has been sold) _ e1671a sonet/sdh transport oh generator _ e1693a atm generator 155/662 _ e1694a atm receiver 155/662 _ e1672a sonet/sdh transport oh receiver _ e1662a sonet/sdh optical i/f 155/662 mb/s _ e1663a sonet/sdh electrical interface guaranteed fully functional and comes w/ 7 day return policy if faulty. contact me at browe58(a)comcast.net if interested. thanx. bill