Cisco TelePresence Video Communication Server Manual de servicio

Cisco TelePresence

Video Communication

Server

Administrator Guide

D14049.10

April 2011

Software version: X6.1

Contents

Contents 2

About the Cisco TelePresence Video Communication Server (VCS) 16

VCS base applications 16

VCS Control 16

VCS Expressway™ 16

Standard features 17

Optional features 17

FindMe™ 18

Device Provisioning 18

Dual Network Interfaces 18

About this guide 19

Typographical conventions 19

Installation and initial configuration 19

Using the web interface 20

Required fields 20

How page navigation is shown in this guide 20

Supported browsers 20

Using the command line interface (CLI) 21

Command types 21

Web page features and layout 22

What’s new in this version? 24

Session management 24

Client certificate-based authentication 24

Automatic updating of CRLs (certificate revocation lists) 24

Cisco AM GW available on VCS Expressway 24

Movi ClearPath provisioning 24

Improved cluster set-up process 24

Presence configuration 24

Overview and status information 25

Status overview 25

System information 26

Cisco VCS Administrator Guide (X6.1) Page 2 of 401

Contents

Ethernet status 27

IP status 28

Resource usage 29

Active administrator sessions 29

Active user sessions 29

Registration status 29

Registrations by device 29

Registrations by alias 30

Registration history 31

Registration details 32

Call status 32

Call history 33

Call summary 34

Call details 34

Call media details 34

Search history 35

About searches 35

Search history list 35

Search details 36

Local Zone status 36

Zone status 37

Link status 37

Pipe status 37

Policy service status 38

TURN relays status 38

Presence 39

Presence publishers 39

Presence presentities 39

Presence subscribers 40

OCS Relay status 40

Provisioning status 41

Provisioning server 41

Cisco VCS Administrator Guide (X6.1) Page 3 of 401

Contents

Phone book server 41

Warnings 41

Hardware status 42

Event Log 42

Configuration Log 43

VCS unit front panel 44

Network and system settings 45

Configuring IP settings 45

Configuring Ethernet settings 46

Configuring DNS settings 46

Configuring Quality of Service settings 47

Configuring system name and access settings 48

Configuring SNMP settings 51

Configuring time zone and NTP server settings 52

Configuring the Login page 53

Configuring external manager settings 53

Configuring logging levels 54

Event Log levels 54

Remote logging 55

Protocols 56

About H.323 56

Using the VCS as an H.323 gatekeeper 56

H.323 endpoint registration 56

About SIP 56

VCS as a SIP registrar 57

VCS as a SIP proxy server 58

Proxying registration requests 58

VCS as a SIP Presence Server 59

H.323 configuration 59

SIP configuration 60

Configuring SIP domains 62

Configuring SIP and H.323 interworking 62

Searching by protocol 62

Cisco VCS Administrator Guide (X6.1) Page 4 of 401

Contents

Enabling SIP endpoints to dial H.323 numbers 63

Registration control 64

About registrations 64

Finding a VCS with which to register 64

Registrations on a VCS Expressway 64

MCU, gateway and Content Server registration 65

Configuring registration restriction policy 65

Registering aliases 66

H.323 66

SIP 67

Attempts to register using an existing alias 67

Blocking registrations 67

Removing existing registrations 67

Re-registrations 67

About Allow and Deny Lists 68

Configuring the registration Allow List 68

Configuring the registration Deny List 69

Device authentication 70

About device authentication 70

Authentication Policy 70

Authentication mechanism 70

Authentication Policy configuration options 71

Zone-level Authentication Policy 71

Subzone-level Authentication Policy 73

SIP authentication trust 74

Device authentication configuration 75

Authentication database 75

Endpoint credentials used for authentication 75

Device authentication using LDAP 75

Authentication process 75

LDAP server settings 76

Device LDAP schemas 77

Authentication using a local database 78

Cisco VCS Administrator Guide (X6.1) Page 5 of 401

Contents

Authenticating with external systems 78

Zones and neighbors 79

About your video communications network 79

Example network diagram 79

Structuring your dial plan 80

Flat dial plan 80

Structured dial plan 80

Hierarchical dial plan 80

About the Local Zone and subzones 81

Bandwidth management 81

Local Zone searches 81

About zones 82

Default Zone 82

Zone configuration 82

Configuring neighbor zones 83

Configuring traversal client zones 86

Configuring traversal server zones 88

Configuring ENUM zones 91

Configuring DNS zones 92

Zone configuration: advanced settings 93

Zone configuration: pre-configured profile settings 98

TLS certificate verification of neighbor systems 99

Clustering and peers 100

About clusters 100

About the configuration master 101

Secure communication between peers 101

Alternates 101

Setting up a cluster 101

Maintaining a cluster 102

Cluster name 102

Cluster pre-shared key 102

Setting configuration for the cluster 102

Adding and removing peers from a cluster 102

Cisco VCS Administrator Guide (X6.1) Page 6 of 401

Contents

Changing the master peer 102

Monitoring the status of the cluster 103

Configuration that is not replicated across a cluster 103

Troubleshooting cluster replication problems 104

Managing clusters and peers 105

Sharing registrations across peers 105

Sharing bandwidth across peers 105

Cluster upgrades and downgrades 106

Cluster backup and restore 106

Clustering and FindMe 106

Clustering and Presence 107

Clustering and TMS 107

About the Cluster Subzone 107

Neighboring the local VCS to another VCS cluster 108

TMS Agent replication status 109

Dial plan and call processing 110

Call routing process 110

How the VCS determines the destination of a call 110

About the VCS's directory service 112

About hop counts 112

Configuring hop counts 112

About transforms and search rules 112

Transforms 113

Search rules 113

Dial plan configuration 113

About the fallback alias 114

About pre-search transforms 115

Pre-search transform process 115

Configuring pre-search transforms 115

Search and zone transform process 117

Configuring search rules 118

Example searches and transforms 120

Filter queries to a zone without transforming 121

Cisco VCS Administrator Guide (X6.1) Page 7 of 401

Contents

Always query a zone with original alias (no transforms) 121

Query a zone for a transformed alias 122

Query a zone for original and transformed alias 123

Query a zone for two or more transformed aliases 124

Stripping @domain for dialing to H.323 numbers 125

Transforms for alphanumeric H.323 ID dial strings 127

Allowing calls to IP addresses only if they come from known zones 129

Configuring policy services 129

About Call Policy 131

Configuring Call Policy 131

Configuring Call Policy rules using the web interface 133

Configuring Call Policy using a CPL script 134

Configuring VCS to use the Cisco TelePresence Advanced Media Gateway 135

Configuring the VCS 135

Usage features and limitations 135

Configuring Cisco AM GW policy rules 136

Dialable address formats 137

Dialing by IP address 138

Dialing by H.323 ID or E.164 alias 138

Dialing by H.323 or SIP URI 138

Dialing by ENUM 138

IP dialing 139

Calls to unknown IP addresses 139

About URI dialing 140

URI dialing without DNS 140

URI dialing via DNS 141

URI resolution process using DNS 141

URI dialing via DNS for outgoing calls 142

URI dialing via DNS for incoming calls 144

URI dialing and firewall traversal 146

About ENUM dialing 146

ENUM dialing process 146

Enabling ENUM dialing 147

Cisco VCS Administrator Guide (X6.1) Page 8 of 401

Contents

ENUM dialing for outgoing calls 147

Zone configuration for ENUM dialing 149

ENUM dialing for incoming calls 150

Configuring DNS servers for ENUM and URI dialing 151

Configuring a zone for incoming calls only 151

Call signaling configuration 152

Identifying calls 153

Disconnecting calls 154

Disconnecting a call using the web interface 154

Disconnecting a call using the CLI 154

Limitations when disconnecting SIP calls 154

Bandwidth control 156

About bandwidth control 156

Example network deployment 156

Bandwidth configuration 157

About downspeeding 158

About subzones 158

Default links between subzones 158

About the Traversal Subzone 158

About the Default Subzone 159

Configuring subzones 159

Configuring subzone membership rules 160

Applying bandwidth limitations to subzones 162

Links and pipes 163

Configuring links 163

Default links 164

Configuring pipes 164

Applying pipes to links 165

Bandwidth control examples 166

Firewall traversal 169

About firewall traversal 169

Expressway solution 169

How does it work? 169

Cisco VCS Administrator Guide (X6.1) Page 9 of 401

Contents

VCS as a firewall traversal client 170

VCS as a firewall traversal server 170

Configuring traversal server zones 170

Configuring other traversal server features 170

Quick guide to VCS traversal client - server configuration 170

Firewall traversal protocols and ports 172

Expressway process 172

H.323 firewall traversal protocols 172

SIP firewall traversal protocols 172

Ports for initial connections from traversal clients 172

Default port summary 173

TURN ports 173

Ports for connections out to the public internet 174

Firewall traversal and authentication 174

Authentication and NTP 176

Firewall traversal and Dual Network Interfaces 176

Firewall configuration 176

Configuring traversal for endpoints 176

Configuring traversal server ports 177

About ICE and TURN services 178

About ICE 178

About TURN 178

TURNrelay server 178

Configuring TURN services 179

TURN relay status information 180

Applications 181

Conference Factory 181

Conference creation process 181

About Presence 182

Presence Server 183

Presence User Agent (PUA) 183

Configuring Presence 184

OCS Relay 186

Cisco VCS Administrator Guide (X6.1) Page 10 of 401

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