Cisco

Cisco routers use an integrated systems approach to reduce operating costs and complexity and deliver exceptional performance and investment protection. ...

Juniper

Juniper is a leading provider of core routing, edge routing and network security solutions for IP-based enterprise and carrier-class networks. Network Hardware Resale was one of the first to offer pre-owned, refurbished and used Juniper equipment and maintains the capital and resources to carry the largest inventory of second-hand Juniper product available on the market. Popular items include the:

Juniper M5 Series Routers
Juniper M10 Series Routers
Juniper M20 Series Routers
Juniper M40 Series Routers
Juniper M160 Series Routers
Juniper T320 Series Routers

Canopy Antenna (Motorola)

Canopy Antenna is a wireless networking system designed for WISPs (wireless internet service providers) available in point-to-point and point-to-multipoint configurations.

Modular "Jack" Connector

Left to right, modular connectors: 8P8C plug, 6P6C plug, 6P4C plug, 4P4C plug, 6P6C jack.

An 8P8C modular plug. This is the common crimp type plug, of the same kind pictured above crimped onto a cable (with moulded sleeve)


Modular connector is the name given to a family of electrical connectors examples of which are pictured. These connectors were originally used in telephone wiring. Even though they are still used for that purpose they are used for a variety of other things as well. A modular connector's advantage over many other kinds include small size and ease of plugging and unplugging. However the plastic retaining spring clip tends to get broken off when cables are pulled from storage for use. If that happens, the plug can easily fall out of the wall jack. Many uses that originally used a bulkier connector have migrated to modular connectors. Probably the most well known applications of modular connectors is for telephone jacks and for Ethernet jacks, which are nearly always modular connectors.

Patch Panel

A patch panel or patch bay is a panel, typically rackmounted, that houses cable connections. One typically shorter patch cable will plug into the front side, whereas the back holds the connection of a much longer and more permanent cable. The assembly of hardware is arranged so that a number of circuits, usually of the same or similar type, appear on jacks for monitoring, interconnecting, and testing circuits in a convenient, flexible manner.


Patch panels offer the convenience of allowing technicians to quickly change the path of select signals, without the expense of dedicated switching equipment. This was first used by early telephone exchanges, where the telephone switchboard (a massive array of patch panels) and a large room full of telephone operators running it was ubiquitous.

Differentiate Routers from Switches

Switch


Router


A switch sorts and distributes the network packets sent between the devices on a local area network (LAN), while a router is a gateway that connects two or more networks, which can be any combination of LANs, wide area networks (WAN), or the Internet.

Conclusion:

What i have learned, a router uses tables to determine the best path to use to distribute the network packets it receives, and a protocol such as ICMP(Internet Computer Message Protocol) to communicate with other routers. A router is a significantly more complicated device than a switch--essentially a specialized computer--and more advanced models may use a reconfigurable operating system such as Linux, rather than firmware coded directly into the hardware. Both routers and switches operate on layers 2 and 3 of the OSI model. So, For me router is more intelligent than switch.

Adtran

Adtran offers a wide variety of solutions for converged voice/data services. Our new Total Access 916 SIP-based multiservice access gateway is the next generation of Adtran's industry-leading Integrated Access Device. This new product is designed for carrier VoIP networks and feature all of the same robust routing and voice features of the widely deployed Total Access IADs, along with a host of new features and functions that enable cost effective, reliable IP service delivery. This device use the Adtran Operating System (AOS) to simplify management and administration. Multiple models offer flexibility for varied applications from PRI delivery and trunking services to hosted IP PBX offerings.

Features

* Number of Ports: 19
* Standard Memory: 64MB
* Flash Memory: 16 MB
* Operating System: Adtran Operating System (AOS)
* Interfaces/Ports: 16 x RJ-11 FXS, 1 x RJ-21, 1 x RJ-48C DSX-1 WAN, 1 x RJ-48C T1/FT1 WAN, 1 x RJ-45 10/100Base-TX LAN, 1 x DB-9 Console Management

* Management: Command Line Interface (CLI), Web-based GUI, n-Command support, SNMP v2, Syslog, Telnet, Craft/Console Port, DHCP, IEEE 802.1p QoS

3Com

The 3Com Gigabit Switch 5 is designed for small offices and remote branch offices requiring high network performance to exchange large data files and images, and access real-time information or connect to high-speed servers or a high-speed network backbone. Featuring autosensing and auto MDI/MDIX on all ports, the Gigabit Switch 5 is delivered in a futuristic, compact and streamlined enclosure. With a high quality dark gun metal look these switches exude quality, the 3Com logos "light up" on power up and they feature illuminating blue LEDs.

Features

* Product Description: 3Com Gigabit Switch 5, switch, 5 ports
* Device Type: Switch
* Form Factor: External
* Dimensions (WxDxH): 4.6 in x 3.6 in x 1.1 in
* Weight: 7.8 oz
* Localization: United States
* Ports Qty: 5 x Ethernet 10Base-T, Ethernet 100Base-TX, Ethernet 1000Base-T
* Data Transfer Rate: 1 Gbps
* Data Link Protocol: Ethernet, Fast Ethernet, Gigabit Ethernet

* Communication Mode: Half-duplex, full-duplex
* Features: Flow control, full duplex capability, auto-sensing per device, auto-negotiation, auto-uplink (auto MDI/MDI-X), Quality of Service (QoS), Jumbo Frames support
* Compliant Standards: IEEE 802.3u, IEEE 802.3i, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3x
* Power: AC 120/230 V ( 50/60 Hz )
* Manufacturer Warranty: 2 years warranty

LinkSys

Linksys by Cisco, commonly known as Linksys, is a major provider of home and small office network products and was founded in 1988 and acquired by Cisco Systems in 2003. Linksys also manufactures broadband and wireless routers, consumer and small business grade Ethernet switching, VoIP equipment, wireless internet video camera, AV products, network storage systems, and other products. Since 2008, all Linksys products sold are now packaged and branded as "Linksys by Cisco".