There are a variety of forms below, just click on the ones you need: 

Authority to Port Telephone Number (LNP)
Change of Lessee - Business
Change of Lessee - Residential
Client Service Agreement
Direct Debit Form - Business
Direct Debit Form - Residential  

13, 1300 or 1800 forms

Click here to download an Application Form  for 13/1300 & 1800 services
Click here to download a Porting Authority Form
Click here to download a Routing Configuration Workbook