Restriction code to unlock nokia 6300

Problem:

i bought a nokia 6300 today and it is blocked to optus network but i want it to be unlocked so i can use my telstra sim do you have the restriction code to unlock it??

Solution:

1. I thought O2 phones are normally unlocked by default - my O2 n80 came unlocked. You might want to try it with a SIM card before shelling out for an unlock code
2. 65985412
   
   I use this code in nokia 6300 and it works.......... thanks a lot ...............
3. 359810015308835
4. the code is 65985412