Cisco TelePresence Administrator's Guide

Configuring ports for connections from traversal clients 59
Firewall traversal and authentication 61
Authentication and NTP 61
Configuring Expressway and traversal endpoint communications 62
About ICE and TURN services 63
About ICE 63
About TURN 63
Configuring TURN services 64
Unified Communications 66
Mobile and remote access 67
Jabber client connectivity without VPN 68
Configuring mobile and remote access on VCS 69
Setting up the VCS Control 69
Setting up the VCS Expressway 72
Setting up VCS security certificates 72
Setting up secure VCS traversal zones 74
Checking the status of Unified Communications services 75
Additional configuration 75
Protocols 77
About H.323 78
Using the VCS as an H.323 gatekeeper 78
H.323 endpoint registration 78
Configuring H.323 79
About SIP 81
VCS as a SIP registrar 81
VCS as a SIP proxy server 82
Proxying registration requests 83
VCS as a SIP Presence Server 83
Configuring SIP 84
SIP functionality and SIP-specific transport modes and ports 84
Certificate revocation checking modes 84
Registration controls 85
Authentication controls 87
Configuring domains 88
Configuring the supported services for Unified Communications (VCS Control only) 88
Configuring delegated credential checking (VCS Expressway only) 88
Configuring SIP and H.323 interworking 90
Registration control 92
About registrations 93
Finding a VCS with which to register 93
Registrations on a VCS Expressway 93
MCU, gateway and Content Server registration 94
Configuring registration restriction policy 94
Registering aliases 94
About Allow and Deny Lists 97
Configuring the registration Allow List 97
Configuring the registration Deny List 98
Configuring Registration Policy to use an external service 99
Device authentication 101
Cisco VCS Administrator Guide (X8.1.1) Page 3 of 507

Cisco TelePresence Specifications

General

Brand	Cisco
Model	TelePresence
Category	Server
Language	English