MOCET IP3072 - Manual (Page 77)

Page 77 Page 77
MOCET IP3072 Smart Office IP Desk Phone User Guide
Proxy server Used in larger companies and organizations to improve network
operations and security, a proxy server is able to prevent direct
communication between two or more networks. The proxy server
forwards allowable data requests to remote servers and/or
responds to data requests directly from stored remote server data.
PSTN Public Switched Telephone Network: The worldwide voice
telephone network.
QoS Quality of service (QoS)
RJ-45 Standard connectors used in Ethernet networks. Even though they
look very similar to standard RJ-11 telephone connectors, RJ-45
connectors can have up to eight wires, whereas telephone
connectors have only four.
Router A device that forwards data packets from one local area network
(LAN) or wide area network (WAN) to another. Based on routing
tables and routing protocols, routers can read the network address
in each transmitted frame and make a decision on how to send it
via the most efficient route based on traffic load, line costs, speed,
bad connections, etc.
RTP/RTCP Real-Time Protocol/Real-Time Control Protocol(RTP / RTCP) :
IETF specifications for audio and video signal management.
Allows applications to synchronize and spool audio and video
information. RTP (Real Time Protocol) is specifically concerned
with the dependable transmission of latency-sensitive traffic
across the network and is involved in using time stamping to
determine network jitter tolerance and makes sure that voice
packets are arriving in order.
SIP Session Initiation Protocol :A protocol that provides telephony
services similar to H.323, but is less complex and uses less
resources. SIP (Session Initiation Protocol) is a signaling protocol
for Internet conferencing, telephony, presence, events notification
and instant messaging. SIP is a text-based protocol, similar to
HTTP and SMTP, for initiating interactive communication sessions
between users.
Subnetwork or
Subnet Found in larger networks, these smaller networks are used to
simplify addressing between numerous computers. Subnets
connect to the central network through a router, hub or gateway.
Each individual wireless LAN will probably use the same subnet
for all the local computers it talks to.
TCP/IP Internet Standard Protocol: The underlying technology behind the
Internet and communications between computers in a network.
The first part, TCP, is the transport part, which matches the size of
the messages on either end and guarantees that the correct
message has been received. The IP part is the user's computer
address on a network. Every computer in a TCP/IP network has
its own IP address that is either dynamically assigned at startup or
permanently assigned. All TCP/IP messages contain the address
of the destination network as well as the address of the
destination station. This enables TCP/IP messages to be
transmitted to multiple networks (subnets) within an organization
or worldwide.