TANDBERG Video Communication Server Administrator's Manual page 7

Grey Headline (continued)
What's in this manual?
Links .................................................................................. 125
About links ................................................................... 125
Default links ........................................................... 125
Creating and editing links .............................................. 125
Creating a new link.................................................. 125
Editing an existing link ............................................ 125
Link configuration options ....................................... 125
Default links ................................................................. 125
About default links .................................................. 125
Pre-configured links................................................. 125
Automatically created links ...................................... 125
Pipes ................................................................................. 126
About pipes .................................................................. 126
Creating and editing pipes ............................................. 126
Creating a new pipe ................................................ 126
Editing an existing pipe ........................................... 126
Pipe configuration options ....................................... 126
Applying pipes to links .................................................. 127
One pipe, one link ................................................... 127
One pipe, two or more links ..................................... 127
Example ........................................................... 127
Two pipes, one link ................................................. 127
Example ........................................................... 127
Default bandwidth and downspeeding .................................. 128
About the default call bandwidth ................................... 128
About downspeeding ..................................................... 128
Configuring default call bandwidth and downspeeding .... 128
Bandwidth control examples ............................................... 129
Example without a firewall ............................................. 129
Example with a firewall .................................................. 130
VCS Expressway subzone configuration .................... 130
VCS Control subzone configuration .......................... 130
Overview and
Introduction Getting started
status
D14049.05
February 2009
Firewall traversal
Firewall traversal overview ................................................... 132
About Expressway™ ...................................................... 132
How does it work? .................................................. 132
VCS as a firewall traversal client .................................... 132
VCS as a firewall traversal server ................................... 132
Quick guide to VCS traversal client - server configuration ...... 133
Overview ...................................................................... 133
VCS Control (client) ....................................................... 133
VCS Expressway (server) ............................................... 133
Firewall traversal protocols and ports .................................. 134
Overview ...................................................................... 134
Expressway process ..................................................... 134
H.323 firewall traversal protocols .................................. 134
SIP firewall traversal protocols....................................... 134
Ports for initial connections from traversal clients .......... 135
Assent ports................................................................. 135
Call signaling .......................................................... 135
Media ..................................................................... 135
SIP ports ...................................................................... 135
Call signaling .......................................................... 135
Media ..................................................................... 135
H.460.18/19 ports ....................................................... 135
Call signaling .......................................................... 135
Media ..................................................................... 135
STUN ports ................................................................... 135
Ports for connections out to the public internet .............. 135
Firewall traversal and authentication ................................... 136
Overview ...................................................................... 136
Authentication and NTP ................................................. 136
Other issues ....................................................................... 137
Firewall traversal and Dual Network Interfaces ............... 137
Firewall configuration .................................................... 137
Configuring the VCS as a traversal client .............................. 138
System VCS Zones and
configuration configuration neighbors
Configuring the VCS as a traversal server ............................ 139
Applications
Conference Factory ............................................................. 143
Presence ............................................................................ 144
Call Bandwidth Firewall
processing control traversal
7
TANDBERG VIDEO COMMUNICATIONS SERVER
ADMINISTRATOR GUIDE
Adding and configuring a traversal client zone ................ 138
Overview ...................................................................... 139
Adding and configuring a traversal server zone ............... 139
Configuring traversal for endpoints ................................ 139
Overview ................................................................ 139
Configuring traversal server ports .................................. 140
Overview ................................................................ 140
Configuration .......................................................... 140
STUN services ...............................................................141
About STUN .............................................................141
About ICE ................................................................141
STUN Binding Discovery ...........................................141
How it works ......................................................141
STUN Relay..............................................................141
How it works ......................................................141
Configuring STUN services .......................................141
Overview ...................................................................... 143
Process .................................................................. 143
Configuration ................................................................ 143
Overview ...................................................................... 144
Presence Server ........................................................... 144
Presence User Agent (PUA) ............................................ 145
Overview ................................................................ 145
Aggregation of presence information ....................... 145
FindMe presence .............................................. 145
Registration refresh period ...................................... 145
Applications Maintenance Appendices