|
North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: E1 - RJ45 pinout with ethernet crossover cable
In article <[email protected]ia.net>, Sam Stickland <[email protected]> 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. |