Teamline 5250, Installation Manual

Page: 17 / 30

Teamline 5250 Page 17
Ports and protocols
Port Host Protocol Notes
50,000-59,999 Edge server TCP Audio, video, and
application sharing
Skype for Business Online
The full range of Skype for Business Online IP addresses is available at:
https://support.office.com/en-us/article/Office-365-URLs-and-IP-address-
ranges-8548a211-3fe7-47cb-abb1-355ea5aa88a2?ui=en-US&rs=en-
US&ad=US&fromAR=1#BKMK_LYO
All source ports are ephemeral (1024-65535) unless otherwise specified.
Outbound
Port Host Protocol Notes
443 Skype for Business Online servers TCP (HTTPS) Webticket, wsfed
authentication
443 Skype for Business Online servers TCP (TLS) SIP signaling
443 Skype for Business Online servers TCP (PSOM/TLS) PSOM connections
web conferencing
443 Skype for Business Online servers TCP Audio, video, and
application sharing
(source port
depends on
configuration)
3478-3481 Skype for Business Online servers UDP Audio, video, and
application sharing
(source port
depends on
configuration)
50,000-59,999
Skype for Business Online
servers
Other client
TCP/UDP Audio (source port
50,000-50,019)
50,000-59,999
Skype for Business Online
servers
Other client
TCP/UDP Video (source port
50,020-50,039)
50,000-59,999
Skype for Business Online
servers
Other client
TCP Application sharing
(source port 50,040-
50,059)