Reply to @goodspeed_1980: im not sure though if paper application has TRN. if not here is what i've found...
<b><u>Paper applications</u></b>
You are encouraged to check the allocation dates and processing time service standards before making contact with the department.
See:
Allocation Dates for General Skilled Migration Applications
Skilled Migration Visa Processing Times
Important: If you have been allocated a case officer, please correspond directly by email with them, where possible.