microsoft teams and skype for business network requirements

CNAME Records / Host name	TTL	Points to address or value
sip	3600	sipdir.online.lync.com
lyncdiscover	3600	webdir.online.lync.com

Ports

UDP ports 3478 through 3481

IP addresses

13.107.64.0/18, 52.112.0.0/14, and 52.120.0.0/14 Bandwidth(up/down) Scenarios 30 kbps Peer-to-peer audio calling 130 kbps Peer-to-peer audio calling and screen sharing 500 kbps Peer-to-peer quality video calling 360p at 30fps 1.2 Mbps Peer-to-peer HD quality video calling with resolution of HD 720p at 30fps 1.5 Mbps Peer-to-peer HD quality video calling with resolution of HD 1080p at 30fps 500kbps/1Mbps Group Video calling 1Mbps/2Mbps HD Group video calling (540p videos on 1080p screen) \