Ports and Protocols
(Extensible Messaging and Presence Protocol [XMPP] and HTTPS)
XMPP traffic to the WebEx Messenger service.
The client sends XMPP through this port in cloud-based deployments only. If port 443 is blocked, the client falls back to port 5222.
30000 to 39999
The client uses this port for far end camera control.
33434-33598 and 8000-8100
Range of media ports used for RTP/SRTP for video calling. The port 33434 is used to enable video calling.
Lightweight Directory Access Protocol (LDAP) directory server.
LDAP directory server (secure).
Computer Telephony Interface (CTI) used for desk phone control.
Global Catalog server.
Global Catalog server (secure).
5070 to 6070
Binary Floor Control Protocol (BFCP) for video desktop sharing capabilities.
XMPP traffic to Cisco Unified Presence or Cisco Unified Communications Manager IM and Presence Service.
( HTTPS )
|Traffic to Cisco Unified Communications Manager and Cisco Unified Communications Manager IM and Presence Service.|
( HTTPS )
Cisco Unity Connection for notifications of voice messages (new message, message update, and message deletion).
Domain Name System (DNS) traffic.
Saving chats to Microsoft Exchange server.
Depending on your server configuration on Microsoft Exchange, use either port 80 or 443, but not both.
Peer-to-peer file transfers.
In on-premises deployments, the client also uses this port to send screen captures.
Session Initiation Protocol (SIP) call signaling.
Secure SIP call signaling.
49152 to 65535
IM-only screen share.
The client randomly selects a port from the range.
The actual range may vary. To find the real range, enter the netsh interface ipv4 show dynamicportrange tcp command.
You can use the SharePortRangeStart and SharePortRangeSize parameters to narrow the range used for IM screen share. For more information on these parameters, see the section on Common Policies parameters in the Deployment and Installation Guide.
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