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Network Gateways

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About Network Gateways

Network gateways interconnect networks with different, incompatible communication protocols. Network gateways perform layer-7 protocol-conversion to translate one set of protocols to another (for example, from TCP/IP to SNA or from TCP/IP to X.25). A gateway operates at OSI layers up through the Session Layer.  Form factor, network type, performance, port, processor specifications, memory, and features are all important specifications to consider when searching for network gateways.

Choices for form factor for network gateways include chip, board, and module.  Network types are the fundamental mechanisms for network communications. They specify the software attributes of data communications, including the structure of a packet and the information contained in it. Protocols may also prescribe all or some of the operational characteristics of the hardware on which they will run. Popular network protocols include IPX and TCP/IP.  Other choices include ATM, Ethernet, ISTN, SONET, Token Ring, xDSL, and ARCNET.  IP telephony allows voice phone calls to be made over the Internet or other packet networks using a PC, via network gateways and standard telephones.  Performance specifications to consider when searching for network gateways include users, number of ports, and data rate.  Users refers to the number of users the device is designed for.  The number of ports defines the total number of ports available on the networking equipment.  The data rate is the maximum data transfer speed.  Port choices for network gateways include AUI, BNC, IEEE 1394, GBIC, MIC, RJ-45, SC, serial, ST, ISDN BR S/T, ISDN BRI U, and USB.

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Products & Services Related to Network Gateways

Network Equipment
Network equipment is used to split, switch, boost, or direct packets of information along a network. This product area includes network hubs, switches, routers, bridges, gateways, multiplexers, transceivers and firewalls. Often, network equipment is defined by is protocol or port type (e.g., Ethernet switch, USB hub).
Network Firewalls
Network firewalls are systems that enforce access control policy between an organization's network and the Internet for security purposes.
Network Hubs
Network hubs serve as the central location for attaching wires to workstations.
Network Routers
Network routers are protocol-dependent devices that connect subnetworks. They are also used to break down a large network into smaller subnetworks.
Network Switches
Network switches route packets between ports at the OSI layer 2, which means that (in Ethernet) the switches decide where incoming packets are transferred to, based on the NIC's 48-bit address.
Networking Repeaters
Networking repeaters regenerate incoming electrical, wireless or optical signals to preserve signal integrity and extend the distance over which data can travel. They are often used to connect cable segments in IEEE 802.3 networks.
VoIP and IP Telephony
VoIP and IP telephony allows PC users to make phone calls over the Internet or other packet networks via gateways and standard telephones.

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Part Numbers for Network Gateways

Part # Distributor Manufacturer Product Category Description
ATNGW100 Verical, Inc. ATMEL Not Provided NETWORK GATEWAY KIT
ATNGW100 Digi-Key Atmel Programmers, Development Systems KIT AVR32 NETWORK GATEWAY
ATNGW100 Avnet Electronics Marketing Atmel Not Provided AVR32 AP7000 NETWORK GATEWAY/EVAL BOARD - AVR32 AP7000 NETWO

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