Glossary - Cisco TelePresence Administrator's Manual

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Glossary

Term
A record A type of DNS record that maps a host name to an IPv4 address.
AAAA record A type of DNS record that maps a host name to an IPv6 address.
Administrator Policy See Call Policy
Alias The name an endpoint uses when registering with the VCS. Other endpoints can then use this name to call it. An endpoint may register with more than one alias.
Alternate One or more VCSs configured to support the same zone in order to provide redundancy. See also Cluster.
AOR A SIP or SIPS URI that points to a domain with a location service that can map the URI to another URI where the user might be available. Typically, the location
Address of Record service is populated through registrations. An AOR is frequently thought of as the "public address" of the user.
ARQ An endpoint RAS request to make or answer a call.
Admission Request
Assent Cisco's proprietary protocol for firewall traversal.
Border Controller A device used to control multimedia networks and firewall traversal.
CA An organization that validates and signs certificate requests.
Certificate authority
Call Policy In relation to the VCS, the set of rules configured system-wide (either via the web interface or CPL script) that determine the action(s) to be applied to calls matching
a given criteria. (Also referred to as Administrator Policy.)
Cisco TMS A Cisco product used for the management of video networks.
Cisco TelePresence Management Suite
Cisco VCS A generic term for the Cisco product which acts as a gatekeeper and SIP proxy/server.
Cisco TelePresence Video
Communication Server
Cisco VCS Control A Cisco VCS whose main function is to act as a gatekeeper, SIP proxy and firewall traversal client. This system is generally located within the firewall.
Cisco VCS Expressway A Cisco VCS with the same functionality as a Cisco VCS Control that can also act as a firewall traversal server. This is generally located outside the firewall.
CLI A text-based user interface used to access the VCS.
Command line interface
Cluster A collection of between two and six VCSs that have been configured to work together as a single Local Zone, in order to provide scalability and redundancy.
Conference Factory An application that allows the VCS to support the Multiway feature. Cisco TelePresence Multiway enables endpoint users to create a conference while in a call even if
their endpoint does not have this functionality built in. See the
CPL An XML-based language for defining call handling. Defined by
Call Processing Language
CRL A list from a CA (certificate authority) of previously signed certificates that it marks as no longer valid.
Certificate revocation list
Default Subzone A subzone used to represent locally registered endpoints and systems that do not fall within any other existing configured subzones within the Local Zone.
Overview and System
Introduction
status configuration
D14049.08
November 2010
Definition
Cisco VCS Zones and
configuration neighbors
Conference Factory section for more information.
RFC 3880 [5].
Clustering and Call Bandwidth
peers processing control
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CISCO TELEPRESENCE VIDEO COMMUNICATION SERVER
Firewall
Applications Maintenance
traversal
ADMINISTRATOR GUIDE
Appendices