Your cat-5 for you network just has to match the patch panel, either 568A or 568B pattern. You might want to try to steer clear of 568A boards, as they are slowly disappearing. As both Cat-5e and Cat-6 standards are in the 568B pattern. Many have a card you can reverse to change the color labels, but some dont. There is nothing more irritating than mixing them in the same building.
I have done this on residential (non-system) phones for some time now, I terminate pairs 1 + 2 to each phone jack and leave the ends on. I leave them on about 6" and roll them up. Use these as line 1 + 2, even if they only have one voice line, as they may in the future get a line 2. This way any 2-line phone can be used, without having to go through every jack to change your terminations. If line 2 is used, and needed in a seperate jack just use the length left over on the first jack.
Any fax, or modem lines then go on pairs 3 or 4. This helps out when you get called back to add or change anything. For instance, "We want to add a second voice line (+/or) we got 2-line phones" You walk in, punch down your CO side of the new line to the orange pair on your board and walk out. If you need line 2 in only one jack, just add it to the length you left on the jack only in that plate, without having to un-do the original jack.
"Add a fax/modem" same thing, add the jack at the plate on green or brown, punch down the otherside, and walk away.