Integration with an existing analogue fax machine will require additional on-premise hardware (Analogue Telephone Adapter) to be deployed to integrate with Managed Voice which may not be cost effective.
We would recommend that you use the e-fax feature available in Managed Voice to receive and send fax digitally. Incoming fax will be converted to PDF documents and sent to your email. You will not need to physically go to your office to collect your fax or worry about fax machines running out of paper or ink.