User manual

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7700 Series unit Specifications
Operating voltage 12 V DC, power supply included (for North America)
Power consumption approx. 10 W
Network interface Ethernet 10/100 Base-T, auto-sensing, RJ45
Video data rate 9.6 kBit/s to 4 MBit/s (MPEG-4)
Audio data rate 80 kBit/s
Audio sampling rate 8 kHz
Video standards PAL, NTSC
Image resolution 704 × 576 pixels
704 × 288 pixels
352 × 288 pixels
176 × 144 pixels
Video coding protocols ISO/IEC 14496 (MPEG-4), M-JPEG
Audio coding protocol G.711, 300 Hz to 3.4 kHz
Network protocols RTP, RTCP, UDP, TCP, IP, HTTP, IGMP, ICMP, ARP, DHCP
JPEG An encoding process for still images (Joint Photographic Experts Group)
Kbps Kilobits per second, the actual data rate
LAN See Local area network
Local area network A communications network serving users within a limited geographical area, such as a
building or a university campus. It is controlled by a network operating system and uses
a transfer protocol.
MAC Media Access Control
MPEG-1 Video compression standard, initially hardware-dependent, now also possible with
software.
MPEG-2 Enhanced video compression standard, with high-level compression that makes images
of studio quality possible. It has now become established as a broadcasting standard.
MPEG-4 Further development of MPEG-2, designed for transmission of audiovisual data at very
low transfer rates (for example via the Internet).
NAT See Network Address Translator
Netmask A mask that explains which part of an IP address is the network address and which part
comprises the host address. It is usually written in dotted decimal notation, for example
"255.255.255.192".
Network Address Translator A proposal for IP address reuse, where the local IP address is mapped to a globally
unique address.
PPP See point-to-point protocol
Point-to-point protocol A protocol allowing a computer using TCP/IP to connect directly to the Internet
QCIF Quarter CIF, a video format with 176 × 144 pixels
RS232, RS485 Data transfer standards
Server push A continuous flow of data sent from the transmitter to the Web browser
Subnet mask See netmask
TCP Transfer Control Protocol
UDP User Datagram Protocol
URL Uniform Resource Locator
UTP Unshielded Twisted Pair
WAN See wide area network
Wide area network A long distance link used to extend or connect remotely located local area networks