For various reasons I need to use a traditional fax machine to send and receive faxes. We have a MFC-J6535DW has the ability to slow the baud rate down. Wanting to know if anyone has successfully used a similar fax on the3CX system and if so what seems to work best. I know I can just keep my current lines from Frontier but I am wanting to reduce my overall cost and move entirely to VOIP. Truly appreciate the help.