Cheeseweasel Posted October 6, 2015 Share Posted October 6, 2015 Hello, Currently attempting to get a new Clearcom Freespeak basestation (wireless system) talking to a Helix (wired system) over the 4-wire connection. The manual (here) on p.93 says to connect the two using a '4W crossover cable'. Looking at the pinouts given on that page, the cable is neither a standard ethernet cable nor a crossover cable. Can anyone please tell me what I actually need? Thanks Link to comment Share on other sites More sharing options...
alistermorton Posted October 6, 2015 Share Posted October 6, 2015 3-4 4-3 5-5 6-6 others n/c I'd say. EDIT - corrected pinout. Link to comment Share on other sites More sharing options...
timsabre Posted October 6, 2015 Share Posted October 6, 2015 I can't help wondering if that is a typo in the manual on pins 5 and 6, as the 4W side would not use the cat-5 pairs correctly if it was wired like that. Link to comment Share on other sites More sharing options...
Brian Posted October 6, 2015 Share Posted October 6, 2015 That diagram, on page 93, does not tie up with the pinout shown on page 17. Link to comment Share on other sites More sharing options...
boatman Posted October 6, 2015 Share Posted October 6, 2015 One of these, a bag of these and some of this will do. Link to comment Share on other sites More sharing options...
Cheeseweasel Posted October 6, 2015 Author Share Posted October 6, 2015 Thanks, sorted it. I thought something funny was going on. Clearcom tech support pointed me to this website My link - type in "How do I make a physical connection" and open the first entry. Link to comment Share on other sites More sharing options...
boatman Posted October 6, 2015 Share Posted October 6, 2015 Ah, another case of a really good design process. Been there and done it more times than I care to remember! Manager: "Here's a good connector to use. It's got eight pins."Engineer: "Oh yes, I'll talk to the designer of the other end and we'll come to an agreement over which pins to use."Manager: "No, you are not allowed to communicate with them as they are in another department and I am king here. I am totally non-technical so I'll just pick some numbers."Engineer: "Right you are." Link to comment Share on other sites More sharing options...
timsabre Posted October 6, 2015 Share Posted October 6, 2015 Just looks like a documentation error rather than a design problem. Link to comment Share on other sites More sharing options...
boatman Posted October 6, 2015 Share Posted October 6, 2015 Just looks like a documentation error rather than a design problem. It would be nice to think that but, even with the documentation as pointed to by Cheeseweasel, it's still not possible to use either off-the-shelf Type A or Type B RJ45 patch cords and requires something homemade! Link to comment Share on other sites More sharing options...
timsabre Posted October 6, 2015 Share Posted October 6, 2015 It would be nice to think that but, even with the documentation as pointed to by Cheeseweasel, it's still not possible to use either off-the-shelf Type A or Type B RJ45 patch cords and requires something homemade! Isn't it just a normal crossover cable? linky Link to comment Share on other sites More sharing options...
alistermorton Posted October 6, 2015 Share Posted October 6, 2015 My original suggestion, which I went back and "incorrected" after looking at the diagram again, was 3-4 4-3 5-6 6-5 and would have been right. Pah. Link to comment Share on other sites More sharing options...
boatman Posted October 6, 2015 Share Posted October 6, 2015 It would be nice to think that but, even with the documentation as pointed to by Cheeseweasel, it's still not possible to use either off-the-shelf Type A or Type B RJ45 patch cords and requires something homemade! Isn't it just a normal crossover cable? linky Nope. A standard Type B crossover cable looks like this: http://www.warehousecables.com/prodphotos/568B-crossover-diagram.jpg Link to comment Share on other sites More sharing options...
timsabre Posted October 6, 2015 Share Posted October 6, 2015 so it does. I always thought the 10-100 ethernet pairs used were the ones on the central 4 pins (green and blue) for some reason. Link to comment Share on other sites More sharing options...
Cheeseweasel Posted October 6, 2015 Author Share Posted October 6, 2015 Yep, it's just unfortunate they decided to use the term 'crossover cable' in their documentation, as to many people familiar with IT it has a very specific meaning. To be fair the tech support guy was very good - he didn't know the answer straight away but phoned me back ten minutes later once he'd looked it up, and gave me the link to that diagram. Link to comment Share on other sites More sharing options...
DrSof Posted September 22, 2016 Share Posted September 22, 2016 Thankfully the new FreespeakII bases do not need crossover cables! Link to comment Share on other sites More sharing options...
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