> > The requirements for a T1 CSU are located in Bellcore TR-TSY-000312 > > Issue1, March 1988. Section 2.3 will give you the detailed answer your > > looking for, however the short answer is you do need to provide the DC > > path. The reason is that midspan repeaters will not function if the > > path is broken. This Bellcore document tells you everything you need to > > know about "DS1 interface connectors" (Bellcore's name for T1 smart > > jacks, T1 CSU's etc) needs to do.
Seems to me that we have a problem if a Bellcore Spec tells you to do what the American national Standard tells you NOT to do. To the best of my knowledge, there never has been a T1 standard published that was not in concert with the requirements of the owners of Bellcore. That leads me to the conclusion that the two standards are addressing different things. The T1 standards address interfaces to the end-customer. (Interface requirements between the network and the customer installation). If the Bellcore standard addresses a mid-span requirement (which is not an interface between the network and a customer installation), we are talking about two different animals, which would explain the anomoly. Thta should put you on guard though, because the device you designed to serve at mid-span, may be unlawful at a customer interface. Happy New Year, Vic
