Q1 Has anyone experience of a Siemens product that replaced the old concentrators which is a remote processor attached to a kilostream link back to the UTC centre. Radials from the processor can be BT or our own cable. I have an application for it if suitable of a compact area that is well covered with ducting and has a very high density of signals. This, if it works would be one of the options. Q2 Do you order 2 or 4 wire circuits for Tele 12 OTU's. I had thought that only the EPS42 (4 wire) was suitable but am now told that a particular 2 wire is suitable though marginally slower and has marginally less capacity. What is the circuit type, is it usable, what constrainsts does it have. Is it cheaper? Phil Selvidge ----------------------------------------------------------- A message from the TCUG mailing list. For information about the list visit //www.freelists.org/webpage/tcug