Delivering faxes over typical SIP trunks or open Internet connections using SIP T.38 is unreliable, unsecure and bandwidth intensive. SIP trunks are a good mechanism for business to connect premise PBX phone systems to VoIP providers, but they do not provide premise-based fax servers with reliability and security when used over the open Internet. HTTPS Fax Connections are better because they are extremely simple to set up, easily navigates through firewalls and NAT’s, has no T.38 dependency and work over any internet or data connection. Once your fax server is setup, you can connect to HTTPS Fax Trunks and in five minutes be sending faxes.