FaxBack NET SatisFAXtion 9.0 - Fax Server Manual - Manual (Page 21)

Voice over IP (VoIP) is a general term for placing telephone calls over data networks. The
NET SatisFAXtion fax server uses Session Initiation Protocol (SIP) and T.38 (International
Telecommunication Union publication T.38) protocol to set up calls, and to transmit fax data
respectively.
2.2.2.1 A Note on Fax Server Ports versus Media Gateway Ports
The ports you see in NET SatisFAXtion are ‘virtual’ ports. They do not correspond with the physical ports
on the media gateway. Outbound ports are allocated lowest port number to highest (ascending) and
inbound ports are allocated from highest to lowest (descending).
2.2.2.2 Configuring NET SatisFAXtion to use a VoIP device
NET SatisFAXtion can use a variety of VoIP devices and/or SIP providers to send and receive faxes. VoIP
devices are initially configured in the ‘Re­Detect Fax Devices’ utility. You can configure VoIP device
parameters afterwards in the ‘Change Server Settings’ utility, located at Start ⇨ Programs ⇨ NET
SatisFAXtion ⇨ Change Server Settings. Click on the ‘Fax Hardware Settings’ button, select a port and
click Advanced.
Click More Settings to override the IP address used for SIP.
Proprietary FaxBack, Inc. 2014 21