Cisco TelePresence Administrator's Manual page 292

Grey Headline (continued)
Glossary
Term
Neighbor zone On the VCS, a zone used to configure a connection to a remote system with which the local VCS has a non-traversal relationship.
Node In relation to the VCS, a node is one end of a link. A node can be a local subzone or a zone.
Non-traversal call (Also referred to as local call.) A call where the signaling but not the media is routed through the local VCS. See the
information.
NTP A protocol used for synchronizing clocks. Defined in RFC 1305.
Network Time Protocol
OCS Relay A VCS application that enables interoperability between Microsoft Office Communications Server (OCS) and FindMe. See the
Peer A VCS that has been configured to belong to a cluster.
PEM An IETF proposal for securing messages using public key cryptography.
Privacy-Enhanced Electronic Mail:
Pipe In relation to the VCS, a means of controlling the bandwidth used on a link.
Proxy, In SIP, an intermediary entity that acts as both a server and a client for the purpose of making requests on behalf of other clients. A proxy server primarily plays the
Proxy server role of routing, which means its job is to ensure that a request is sent to another entity "closer" to the targeted user. Proxies are also useful for enforcing policy (for
example, making sure a user is allowed to make a call). A proxy interprets, and, if necessary, rewrites specific parts of a request message before forwarding it. While
a proxy can set up calls between SIP endpoints, it does not participate in the call after it is set up.
QoS Mechanisms that give a network administrator the ability to provide different priorities to an applications' network traffic.
Quality of Service
RAS A protocol used between H.323 endpoints and a gatekeeper to register and place calls.
Registration, Admission and Status
Registrar In SIP, a server that accepts REGISTER requests and places the information it receives in those requests into the location service for the domain it handles. This
information is used to advise other SIP Proxies/Registrars where to send calls for that endpoint.
Regex A pattern used to match text strings according to a POSIX-defined syntax.
Regular expression
RFC A process and result used by the IETF for Internet standards.
Request for Comments
RS-232 A commonly used standard for computer serial ports.
RTCP A control protocol for RTP. Defined by
RTP Control Protocol
RTP Real time protocol designed for the transmission of voice and video. Defined by
Real-time Transport Protocol
SASL A framework for authentication and data security in Internet protocols.
Simple Authentication and Security
Layer
Overview and System
Introduction
status configuration
D14049.08
November 2010
Definition
RFC 3550
Cisco VCS Zones and
configuration neighbors
[17].
RFC 3550
Clustering and Call Bandwidth
peers processing control
292
CISCO TELEPRESENCE
What are traversal calls?
OCS Relay
[17].
Firewall
Applications
traversal
VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
section for more
section for more information.
Maintenance Appendices