Can I apply 港澳居民來往內地通行證 in Sydney Consular Office (Australia) 首次申請 (first time application)

I am an Australian Citizen, also a holder of Hong Kong ID card & Hong Kong SAR passport, planning to visit China in April 2015. Can I apply 港澳居民來往內地通行證 in Sydney Consular Office (Australia), 首次申請 (first time application) or I must go to Hong Kong to apply? If it can be done in Sydney, what are the procedures and how long it will take. Thank you for your advice.