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www.leviton.com/OA_HTML/ ··· te=10251I think I found the data sheet for your panel.
Correct, the orn/whi pair are connected to the voice CPE in the NID so you route them to the 1st pair in your panel. Per the data sheet the first pair goes to a 8-pos jack to connect the alarm. Normally line 1 is blue pair, line 2 is orange. That is the way you should wire all the phone drops in the house even though it will not match the colors wired to the NID.
Then punch down the rest of the phone lines to the panel.
I'm confused by the rest of your post. How are the LAN drops wired, I assume they also all go the the panel. You have several choices
1) Locate the DSL/router and Ethernet switch in the Leviton cabinet. In that case need to wire a RJ-11 jack in the cabinet to the blu/whi pair and connect the router WAN interface to it and a short patch cable to the Ethernet switch.
2) Locate the DSL/router in your office and the Ethernet switch in the cabinet. Need to extend the blu/white DSL pair to your office. It sounds like you only have a single phone line and house is wired with 4-pair Category rated wiring If that is the case use an unused pair on the drop to your office to deliver DSL.
Assuming you are using 6-pos jacks for phone use blu/whi for line 1 and orn/whi for line two.
Use one of the unused pair (grn/whi) for DSL. In your office install two phone jacks one for phone (blu/whi line 1 & org/whi Line 2. The second 6-pos jack is dedicated for DSL. On the DSL jack terminate grn/whi to line 1 (blu/whi).
Connect a LAN port in the router to Ethernet jack in your office. This connects the router to the Ethernet switch in the cabinet. Connect the various Ethernet drops to the switch. Modern networking gear uses Auto-MDIX so there is no need for crossover cables.
Option 3) some combination of the above.
/tom