To make many Invoice Templates for inbound DID billing. Open source software is to be used for this project. The Templates in pdf are to be filled out on our server, to make the invoices to be send by email.
1) LO Calc spreadsheet with interchangeable background image of Invoices. 2) Software to change ods to pdf without loosing calculations. 3) Asterisk CEL to be used to fill Cells on spreadsheet.
Very good knowledge of Billing and Asterisk PBX is needed. Good communications !
See attachment for more info.
11 freelanceria on tarjonnut keskimäärin 559$ tähän työhön
Hello! I'd like to deliver billing software. I'm familiar with UI/UX, inventory, sql, point of sales automation. I'll do the job fairly good. Please, give me a try!