Cisco TelePresence Administrator's Manual page 290

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Glossary
Term
Default Zone A non-configurable zone on the VCS used to represent incoming connections from endpoints that are not recognized as belonging to any of the existing configured
neighbor, traversal client or traversal server zones.
Device Provisioning An option key that allows VCS to provision endpoints with configuration information on request and to supply endpoints with phone book information. See the
Provisioning
DiffServ A
Differentiated Services
DNS A distributed database linking domain names to IP addresses.
Domain Name System
DNS zone On the VCS, a zone used to configure access to endpoints located via a DNS lookup.
E.164 An ITU standard for structured telephone numbers. Each telephone number consists of a country code, area code and subscriber number.
ENUM A means of mapping E.164 numbers to URIs using DNS. Defined by
E.164 Number Mapping
ENUM zone On the VCS, a zone used to configure access to endpoints located via ENUM.
External manager The remote system that is used to manage endpoints and network infrastructure. The Cisco TelePresence Management Suite (Cisco TMS) is an example of an
external manager.
External zone Any zone configured 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 The act of crossing a firewall or NAT device.
FindMe™ A User Policy 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 A domain name that specifies the node's position in the DNS tree absolutely, uniquely identifying the system or device. Note that in order to use FQDNs instead of
Fully Qualified Domain Name IP addresses when configuring the VCS, you must have at least one DNS server configured.
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 defines the protocols used for packet-based multimedia communications systems.
HTTP A protocol used for communications over the internet.
Hypertext Transfer Protocol
HTTPS A protocol used for secure communications over the internet, combining HTTP with TLS.
Hypertext Transfer Protocol over
Secure Socket Layer
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 A collaborative algorithm that works together with STUN services (and other NAT traversal techniques) to allow clients to achieve firewall traversal. This is the
Interactive Connectivity Establishment emerging traversal standard for use by SIP endpoints (although it could be used for other protocols).
Overview and System
Introduction
status configuration
D14049.08
November 2010
Definition
section for more information.
Quality of Service (QoS) mechanism supported by the VCS.
Cisco VCS Zones and
configuration neighbors
RFC 3761 [8].
Clustering and Call Bandwidth
peers processing control
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CISCO TELEPRESENCE VIDEO COMMUNICATION SERVER
Firewall
Applications Maintenance
traversal
ADMINISTRATOR GUIDE
Device
Appendices