Send and receive faxes easily with the PamFax fax software solution. Free to sign up, includes three free pages. Worldwide sending and receiving. Skype supported. - PamFax
Skype for Business Serverでの直接 SIP 接続 - Skype for Business Server 2015 | Microsoft Learn
PamFaxにSkypeへのアクセスを許可する方法 - Powered by Kayako https://www.pamhelp.com/index.php? ヘルプデスクソフトウェア