Blogs

• https://ucmart.uk/
• http://blog.schertz.name/
• https://tomtalks.blog/
• http://www.expiscornovus.com/
• https://www.lee-ford.co.uk/

Andrew Morpeth has an extensive list of UC blogs on his site:

• https://ucgeek.co/lync-and-skype-for-business-experts-you-should-follow/

SfB & Teams

• Teams Certified devices
• SfB Technet
• Teams Technet

AudioCodes

• Gateway firmware
• Manuals & documentation