In article <cistron.Pine.WNT.4.61.0502251117300.4032@tech1.office.toastedmedia.net>, Sam Stickland <sam_ml@spacething.org> wrote:
Quick question: If I have two E1 ports (RJ45), then will running a straight ethernet cable between the two ports have the same affect as plugging a ballan into each port and using a pair of coax (over a v. short distance).
Likewise would using an ethernet crossover cable have the same affect as swapping the pairs round on one balland.
Or are the pinouts different to ethernet? I tried googling but couldn't find anything (perhaps because I can't seem to spell ballan :/ ).
The pinouts are different. It's easy to make your own E1 crosscable though. E1 uses pairs 4-5 and 3-6, just swap those. 4-5 <------------> 3-6 3-6 <------------> 4-5 (Oh it's "balun", from BALanced/UNbalanced, but you don't need one) Mike.