No they don't, Blue white/White blue carry the line and Orange white carries the ringer to any extensions (as long as it is wired according to the rules) although as an ex Telewest (pre NTL/Virgin etc) engineer, I can affirm that might not be the case 🙂
Cant see your pictures, is this a main socket or an extension you are reconnecting?
If an extension, check the wiring at the main socket and match it.
If it is your main line you probably have a box on the outside of your house? If so peek inside and see which wires are connected to the wire coming to your house (might be in a cellar if you have one, just follow the wire) or, strip the end of all the wires, spit on your finger and see which ones make it bubble.
Honest, it works and stings less than licking them (that is reserved for trainees).
These two should go into 2 and 5.
EDIT- the others don't need to go anywhere.