Protected: Deploying Persistent Chat Server in SFB by David Papkin David PapkinJanuary 21, 2016February 11, 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 →