185
TANDBERG VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
D 14049.01
07.2007
Introduction Getting
Started
System
Overview
System
Configuration
H.323 & SIP
Configuration
Registration
Control
Zones and
Neighbors
Call
Processing
Firewall
Traversal
Bandwidth
Control Maintenance Appe ndices
TANDBERG VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
Appendices
Term Definition
Interworking Allowing H.323 systems to connect t o SIP systems.
IPv4
Internet Protocol version 4
Version 4 of the Internet Protocol, de fined in RFC 791 [18].
IPv6
Internet Protocol version 6
Version 6 of the Internet Protocol, de fined in RFC 2460 [19].
IRQ
Information Request
A request sent to an endpoint requ esting information about i ts status.
LAN
Local Area Network
A geographically limited comp uter network, usually with a h igh bandwidth throughp ut.
LDAP
Lightweight Director y Access Protocol
A protocol for accessing on -line directories runnin g over TCP/IP.
Link In relation to the VCS, a connectio n between two nodes.
LRQ
Location Request
A RAS query between gateke epers to determine the loca tion of an endpoint.
NAPTR record A type of DNS record.
NAT
Network Address Translation
Also known as IP masquerading . Rewriting source and destin ation addresses as the IP pac ket passes through the NAT device.
Node In relation to the VCS, a node is one end of a l ink. A node can be a local subzone o r a zone.
NTP
Network Time Protocol
A protocol used for synchroniz ing clocks.
Pipe In relation to the VCS, a means of controlling the b andwidth used on a link.
Proxy, Proxy Server In SIP, an intermediary entity that a cts as both a server and a clien t for the purpose of making requ ests on behalf of other clients . A proxy server primari ly plays the
role of routing, which means its j ob is to ensure that a request is sent to a nother entity “closer” to the t argeted user. Proxies are also useful for e nforcing policy
(for example, making sure a user is allowed t o make a call). A proxy interprets, an d, if necessary, rewrites spe cific parts of a request m essage before forwardin g it.
While a proxy can set up calls betw een SIP endpoints, it does not p articipate in the call onc e it is set up.
RAS
Registration, Admission and S tatus
A protocol used between H.323 en dpoints and a gatekeeper to regi ster and place calls.
Registrar In SIP, a server that accepts REGISTER re quests and places the infor mation it receives in those req uests into the location ser vice for the domain it handl es. This
information is used to advise oth er SIP Proxies/Registrars whe re to send calls for that endpoint .
Regex
Regular Expression
A pattern used to match text str ings according to a POSIX- defined syntax.
RFC
Request for Comments
A process and result used by the IE TF for Internet standards .
RS-232 A commonly used standard for c omputer serial ports.
RTCP
RTP Control Protocol
A control protocol for RTP, defined by RF C 3550 [17].
RTP
Real-time Transport Proto col
Real time protocol designed fo r the transmission of voice and vi deo. Defined by RFC 3550 [17].
SSH
Secure Shell
An encrypted protocol us ed to provide a secure CLI.
Glossary