Had to put in a little Vertical SBX today and to save time I made up a cable to save time on site. Uses standard 4p crimp on modular plugs and used pins 4&5. Well, I plugged it in, crossconnected, phone dead.Tested my rj14, tested good.After a bit of head scratching and since I didnt have ant documentation, I called tech support. Turns out, they use pins 3&6 for digital phones and 4&5 are analog. New one on me but I dont install much new stuff anymore.