API Documentation > SOAP API > InterFAX Outbound PCI Fax – SOAP API Reference > Sending faxes Sending faxes The following Outbound PCI methods are available for submitting secure messages to the Interfax system via SOAP. Sending faxes SendCharFax (SL) SendFax (SL) SendfaxEx_3 CancelFax (SL) SendChainedFax QueryCompleted QueryList