Online fax services convert documents into a format that is compatible with all fax machines and does so over the internet. It uses a bundle of open and accessible standards like Voice over Internet Protocol (VoIP) for low-cost business faxing. Online fax works by compressing documents into data packets and sending them over the internet to various telephone service providers. Historically, faxes used to be sent at a 9600 baud rate, but today's transmission speeds are monumentally faster by comparison. All you need is an internet connection, and you can send signed contracts, invoices, agreements, and more to your recipients. Likewise, you can receive as many faxes as you want without tying up any business phone lines. Read this in-depth article on how to send faxes over the internet to see step-by-step the processing for sending and receiving faxes online.