Advantages & Disadvantages of IP Phones

Voice over Internet Protocol, commonly known as VOIP, allows users to establish voice connections over the Internet, much like traditional telephone services that traverse dedicated copper wires. While a growing number of users continue to adopt the technology, the relatively new protocol has a number of disadvantages that counter its benefits.

Advantage

1.       Cost

A primary benefit of Cisco Ip Phone, and a benefit often referenced by IP telephone service providers such as Vonage and Magic Jack, is the reduction of cost for IP telephone customers. Traditional, circuit-based telephone companies have invested billions of dollars over several decades to build out their infrastructure and provide expensive resources dedicated to maintaining voice communications. Because VOIP technology relies on the Internet, rather than an expensive dedicated network, Cisco Phone service providers can charge considerably lower prices than their traditional counterparts.

2.       Mobility

With the introduction of modular plugs in the 1980s, traditional telephones began to allow users to move the devices from place to place with relative ease. If the user moved the phone to a different location, though, the telephone would operate with a different telephone number and, depending on the service provider, cp-7945g enable different features. IP phones, by contrast and according to IP product vendor Cisco, register with a central server regardless of their physical location. For this reason, a user can move an IP phone from location to location, state to state or even to another country while still keeping the same telephone number and set of features.

3.       Features

Traditional telephone services allow basic features such as call waiting, conference calling, and voicemail and caller identification. According to the Federal Communications Commission (FCC), IP phones typically enable all of these features and a number of others not available in the traditional telephone network. 7945g IP phones, for example, can allow a user to place a call on hold and pick it up from anywhere else with an Internet connection, transfer a call to a telephone on another network, ring incoming calls to several telephones on different networks at the same time and even deliver voicemail messages via e-mail. The specific features offered supported by IP phones vary from phone to phone, cp-7945g= and many may require support from the VOIP service provider.

Disadvantage:

1.       Quality of Service

While the Internet-based routing of IP phone calls enables cheap, mobile service, it also moves voice traffic off a dedicated network and onto an ever-changing digital landscape. In the absence of a dedicated set of voice circuits, IP phones typically, according to Cisco, convert voice sounds into data packages, address them to the VOIP switch and send them out across the Internet with no guarantee that they will arrive at their destination. Despite numerous quality of service (QoS) measures implemented by IP phone vendors, used phones VOIP users may occasionally experience a delay in the conversation (latency), poor or robotlike sound quality (jitter) or miss portions of the conversation (packet loss).

2.       Internet Requirement

Despite their high mobility, cisco ip phone price must have access to the Internet to work. Because IP phones rely on the ability to connect to the Internet and send data packets, according to Cisco, users must subscribe to a broadband Internet service to use the devices. According to the FCC, this requirement may represent an additional expense to users who do not already subscribe to an Internet connection.

3.       Electricity

Traditional telephones require a small amount of electricity to operate, according to service provider CenturyLink, used cisco ip phone but they pull that electricity from a special line card in the telephone company central office. As a result, customers can still use a traditional telephone during a power outage. IP phones, according to the FCC, must draw commercial power to perform their functions and may leave customers without telephone service during a power interruption.

What’s a Router? How does It Work?

Generally, most people are familiar with internet, but have no general idea about router. As a matter of fact, router is related to internet, and vital to net. So what is a used routers, and how it works? Let’s have a look.

Router, a network device that does what it sounds like - it 'routes' data.Routers are devices that allow computers to talk to or connect with other computers as well as other computer hardware.In a simple way, a router can connect a computer to more than one other computer. No matter what type of used cisco routers you have, how it works is what router users concerned. Firstly, look at the following figure, it directly display the relationship between computers and router.

Guide for you to connect a router to computers

1.       Ensure that both computers have a LAN (or an Ethernet) card allowing the sharing of files and peripherals. cisco routers used Though all new computers and laptops are equipped with such cards, you may need to buy and attach LAN cards for older models.(A network card is a devised either installed inside a desktop computer or a card that slides into a laptop. A router is the piece that will allow you to receive wireless internetand networking from the devise with the network card installed.)

2.       Connect the cable from your Internet Service Provider (ISP) to the Internet port of your used routers. Note that if you have an ADSL connection, your input cable would be a telephone line that needs to be inserted into the ADSL port of the router. For all other connections, you would have a thicker cable known as CAT5 (or CAT6).

3.       Take two Ethernet cables and plug them into the Ethernet ports of the router. Note that you will require a router with at least two Ethernet ports to share Internet on two computers. Plug the other end of each of the cables into the Ethernet port of the computers. If you have a router with a single Ethernet port, buy a switch or hub and connect the used router with it (using the Ethernet cable). In turn, the switch (or hub) that includes at least two Ethernet ports will have to be connected to the computers.(More info of switch, hub and router you can visit “Identifying What is Router, Switch and Hub”)

http://ciscorouterswitch.over-blog.com/article-identifying-what-is-router-switch-and-hub-76970053.html

4.       Switch on the router and the computers.

5.       Configure the router by referring to its user manual. The configuration process defers depending on the type and brand of the buy cisco router.Once configured, you should be able to access Internet on both computers.

More related to router

The router is hooked up between the cable modem and your computer/s.

The router assigns LAN (local area network) IP's to each computer to make it simpler to network.

Buy cisco routers helps block port access into your computer and is a better defense against hackers then a software firewall such as Norton Internet Security or other software firewalls someone might install on their system.

A router is very easy to set up if you read the instruction manual that comes with it.