CSU/DSU

Hi Sam
This is Saravanan giving u the info. If u want to configure CSU/DSU for Cisco based devices go to the cisco site which is free and the URL is usefull for u in all the ways http://www.cisco.com/univercd/home/home.htm
and if u want for NortelNetworks u can go to www.nortelnetworks.com.

Your best source is going to be the manufacturer's Web site for the device you have in front of you.

However, most CSU/DSU devices are pretty much non-configurable black boxes with an interface to the telco circuit (be it T1, FT1, 56k or whatever) and an interface (usually v.35 serial) to the router. All the real configuration work is done either at the telco switch or at the router. The only options at the CSU level are typically things like which side (DTE or DCE) supplies the syncronization clock signal and you can usually just use the defaults unless you're trying to do something new and interesting like connecting two CSU units back-to-back in a test lab.

paul