Definitions - Viking X-1605 Series Product Manual

Bitrate : The amount of video bits transferred per second. Higher values
make for better video definition, but more bandwidth is consumed. Some
systems may limit the maximum video bitrate.
Client: A computer or device that makes use of a server. As an
example, the client might request a particular file from the server.
Codec (audio encoder/decoder): SIP audio Codecs convert the analog
audio to/from digital audio that is sent in the SIP call. The Codec format
that is used should be supported by the SIP server and all SIP devices
involved in the VoIP call.
DHCP: Dynamic Host Configuration Protocol. In this procedure the
network server or router takes note of a client's MAC address and
assigns an IP address to allow the client to communicate with other
devices on the network.
DNS Server: A DNS (Domain Name System) server translates domain
names (ie: www.vikingelectronics.com) into an IP address.
Ethernet: Ethernet is the most commonly used LAN technology. An
Ethernet Local Area Network typically uses twisted pair wires to achieve
transmission speeds up to 1Gbps.
FPS : Frames Per Second. The number of video frames transmitted per
second.
H.264: Video compression for high-definition digital video. Also known as
MPEG -4 Part 10 or Advanced Video Coding (MPEG-4 AVC), H.264 is
defined as a block-oriented, compensation based video compression
standard the defines multiple profiles (tools) and levels (max bitrates and
resolutions).
Host: A computer or device connected to a network.
Host Name: A host name is a label assigned to a device connected to a
computer network that is used to identify the device in various forms of
network communication.
Hosts File: A file stored in a computer that lists host names and their
corresponding IP addresses with the purpose of mapping addresses to
hosts or vice versa.
Internet: A worldwide system of computer networks running on IP
protocol which can be accessed by individual computers or networks.
IP: Internet Protocol is the set of communications conventions that
govern the way computers communicate on networks and on the
Internet.
IP Address: This is the address that uniquely identifies a host on a
network.
LAN: Local Area Network. A LAN is a network connecting computers
and other devices within an office or building.
Lease: The amount of time a DHCP server reserves an address it has
assigned. If the address isn't used by the host for a period of time, the
lease can expire and the address can be assigned to another host.
MAC Address: MAC stands for Media Access Control. A MAC address,
also called a hardware address or physical address, is a unique address
assigned to a device at the factory. It resides in the device's memory
and is used by routers to send network traffic to the correct IP address.
You can find the MAC address of your E-10/20/30/32-IP phone printed
on a white label on the top surface of the PoE LAN port.

2 - Definitions

MJPEG (Motion JPEG): A video encoding format in which each video
frame or interlaced field of a digital video sequence is compressed
separately as a JPEG image.
Multicast : This can refer to RTP Multicasting (audio only), or to RTSP
(audio and video). One device is broadcasting a stream to multiple
listening devices. A specific IP address and port are used.
Router: A device that forwards data from one network to another. In
order to send information to the right location, routers look at IP Address,
MAC Address and Subnet Mask.
RTP: Real-Time Transport Protocol is an Internet protocol standard that
specifies a way for programs to manage the real-time transmission of
multimedia data over either unicast or multicast network services.
RTSP (Real-Time-Streaming-Protocol): Application level network
communication system that transfers real-time data from multimedia to an
endpoint device by communicating directly with the server streaming the
data.
Server: A computer or device that fulfills requests from a client. This
could involve the server sending a particular file requested by the client.
Session Initiation Protocol (SIP): Is a signaling communications
protocol, widely used for controlling multimedia communication sessions
such as voice and video calls over Internet Protocol (IP) networks. The
protocol defines the messages that are sent between endpoints, which
govern establishment, termination and other essential elements of a call.
Static IP Address: A static IP Address has been assigned manually and
is permanent until it is manually removed. It is not subject to the Lease
limitations of a Dynamic IP Address assigned by the DHCP Server. The
default static IP Address is: 192.168.154.1
Subnet: A portion of a network that shares a common address
component. On TCP/IP networks, subnets are defined as all devices
whose IP addresses have the same prefix. For example, all devices with
IP addresses that start with 100.100.100. would be part of the same
subnet. Dividing a network into subnets is useful for both security and
performance reasons. IP networks are divided using a subnet mask.
TCP/IP: Transmission Control Protocol/Internet Protocol is the suite of
communications protocols used to connect hosts on the Internet. TCP/IP
uses several protocols, the two main ones being TCP and IP. TCP/IP is
built into the UNIX operating system and is used by the Internet, making it
the de facto standard for transmitting data over networks.
TISP: Telephone Internet Service Provider
Video Payload: An integer between 96 and 127. This is used for the
SDP (Session Description Protocol) to indicate the RTP Payload Type.
H.264 and MJPEG video calls fall under the "Dynamic" payload type.
WAN: Wide Area Network. A WAN is a network comprising a large
geographical area like a state or country. The largest WAN is the Internet.
Wireless Access Point (AP): A device that allows wireless devices to
connect to a wired network using Wi-Fi, or related standards. The AP
usually connects to a router (via a wired network) as a standalone device,
but it can also be an integral component of the router itself.
Wireless Repeater (Wireless Range Extender): takes an existing signal
from a wireless router or access point and rebroadcasts it to create a
second network. When two or more hosts have to be connected with one
another over the IEEE 802.11 protocol and the distance is too long for a
direct connection to be established, a wireless repeater is used to bridge
the gap.
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