Siebel System Requirements and Supported Platforms > Other Supported Platforms > Siebel Communications Server >

Siebel Communications Server: Supported Fax Servers

In order to send a fax, an email message must be converted to a fax. You need both a third-party fax server and an email server for this purpose. For supported software versions for fax servers, see Supported Software and Ancillary Programs. For details on configuring fax addressing schemes, see Siebel Communications Server Administration Guide.