![](/images/new-backgrounds/1267248/267248549x1.webp)
Grey Headline (continued)
Glossary
TANDBERG VIDEO COMMUNICATIONS SERVER ADMINISTRATOR GUIDE
Term | Definition |
UA | A SIP device used to make and receive calls. |
User Agent |
|
UDP | A communication protocol defined by RFC 791 [18]. It is less reliable than TCP. |
User Datagram Protocol |
|
URI | A formatted string used to identify a resource, typically on the internet. |
Uniform Resource Identifier |
|
User Policy | The set of rules that determine the action(s) to be applied to calls for a particular user or group. |
VCS | A generic term for the TANDBERG product which acts as a gatekeeper and SIP Proxy/Server. |
Video Communications Server |
|
VCS Control | A VCS whose main function is to act as a gatekeeper, SIP proxy and firewall traversal client. This system will generally be located within the firewall. |
VCS Expressway | A VCS with the same functionality as a VCS Control that can also act as a firewall traversal server. This will generally be located outside the firewall. |
Zone | Zones are used on the VCS to define and configure connections to locally registered and external systems and endpoints. The Local Zone refers to all the locally |
| registered endpoints and systems, and consists of configurable subzones. External zones are used to configure connections to external systems with which the VCS |
| has a Neighbor, Traversal Client or Traversal Server relationship, and to configure the way in which the VCS performs ENUM and DNS searches. |
Introduction | Getting Started |
| Overview and |
| System |
| VCS |
| Zones and |
| Call |
| Bandwidth |
| Firewall |
| Applications |
| Maintenance |
| Appendices |
| Status |
| Configuration |
| Configuration |
| Neighbors |
| Processing |
| Control |
| Traversal |
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
D14049.04 |
|
|
|
|
|
|
|
| 275 |
|
|
|
|
|
|
|
|
|
| ||
JULY 2008 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|