Protected: Deploying Persistent Chat Server in SFB by David Papkin dpapkinJanuary 21, 2016 David Papkin Category, microsoft, Skype For Business Enter your password to view comments. This content is password-protected. To view it, please enter the password below. Password: david mark papkin, David Papkin, davidmarkpapkin, davidpapkin, persistent chat, SFB, skypeforbusiness ← Reverse Proxy Skype for Business by David Papkin High Availability in Skype for Business 2015 by David Papkin →