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D14049.04
JULY 2008
Grey Headline (continued)
TANDBERG VIDEO COMMUNICATIONS SERVER
ADMINISTRATOR GUIDE
Introduction Getting Started
Overview and
Status
System
Conguration
VCS
Conguration
Zones and
Neighbors
Call
Processing
Bandwidth
Control
Firewall
Traversal
Appendices
Applications Maintenance
Glossary
Term Denition
External zone Any zone congured on the local VCS that connects out to a remote system or the internet. Neighbor, Traversal Server, Traversal Client, ENUM and DNS zones are
all external zones.
Firewall traversal Crossing a rewall or NAT device.
FindMe™ A TANDBERG feature that allows users to have a single alias on which they can be reached regardless of the endpoint(s) they are currently using.
FQDN
Fully Qualied Domain Name
A domain name that species the node’s position in the DNS tree absolutely, uniquely identifying the system or device. Note that in order to use FQDNs instead of
IP Addresses when conguring the VCS, you must have at least one DNS server congured.
Gatekeeper A device used to control H.323 multimedia networks. An example is the TANDBERG Gatekeeper.
Gatekeeper zone A collection of all the endpoints, gateways and MCUs managed by a single gatekeeper.
H.323 A standard that denes the protocols used for packet-based multimedia communications systems.
HTTP
Hypertext Transfer Protocol
A protocol used for communications over the internet.
HTTPS
Hypertext Transfer Protocol over
Secure Socket Layer
A protocol used for secure communications over the internet, combining HTTP with TLS.
Hop count The maximum number of gatekeeper or SIP proxy devices (e.g. a VCS) that a message may be forwarded through before it is decided that its intended recipient is not
reachable.
ICE
Interactive Connectivity Establishment
A collaborative algorithm that works together with STUN services (and other NAT traversal techniques) to allow clients to achieve rewall traversal. This is the
emerging traversal standard for use by SIP endpoints (although it could be used for other protocols).
IETF
Internet Engineering Task Force
An organization that denes (via documents such as RFCs) the protocol standards and best practices relating to the design, use and management of the internet.
Interworking Allowing H.323 systems to connect to SIP systems.
IPv4
Internet Protocol version 4
Version 4 of the Internet Protocol, dened in RFC 791 [18].
IPv6
Internet Protocol version 6
Version 6 of the Internet Protocol, dened in RFC 2460 [19].
IRQ
Information Request
A request sent to an endpoint requesting information about its status.
LAN
Local Area Network
A geographically limited computer network, usually with a high bandwidth throughput.
LDAP
Lightweight Directory Access Protocol
A protocol for accessing on-line directories running over TCP/IP.
Link In relation to the VCS, a connection between two nodes.
Local Registration,
Locally Registered Endpoint
A relative term used to refer to any endpoint or system that is registered with the Local VCS.