On Fri, Jun 08, 2001 at 06:08:17PM +0000, Alex wrote: > A question to you all: > > Now, as far as ive gotten by my research, one needs to buy a WAN card > that understands the HDLC protocol or the SyncPPP protocol (depending on > your provider). Ive foung at least three that run under linux..... > > Now something made me nervous.... my provider said he can get me a V.35 > line or a g207 line (i dont know what does that mean), i cant find docs > on bridging from this kind of interface to ethernet. >
I believe you're talking about a T1/E1 link. Basically, the telco brings you the T1/E1 trunk. Then, depending on the country/operator, they provide you with a CSU/DSU, or not. It they do, the CSU/DSU will provide a sync serial port, either V35 or X21. V35 should be avoided, connectors are ugly and expensive, X21 is OK. Then you'll need a sync board with a matching serial interface (see below). If they don't, they provide you a basic G703 T1 or E1 line. You have either to buy a CSU/DSU, or to use a board that doesn't require one. In this case, your board will connect directly to the 4 telco wires, using (usually) an RJ45 plug. Such board (with or without CSU/DSU) exist for Linux. Try : www.sangoma.com, www.etinc.com, etc. -- Nicolas BOUGUES Axialys Interactive
