2011年8月10日星期三

IP Phones, Cost, Mobility and Features You Need Know



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.

2011年8月5日星期五

Cool Gift: Cisco Routers, Switches in Big Discount Now

Making a Surprising Internet World as Cool Gift: Cisco Router, Switches in Big Discount Now

Preparing gifts for friends ,families, relatives is not an easy task to be finished. Special, unique, significative, you hope your gift is like that. Router?cisco switch? Oh, kidding. Not kidding, I think it very special, maybe no one do like that, so giving friends a Cisco router as a present is great idea, just like Cisco's slogan “It brings your best minds and their brightest ideas together." Cisco network equipments can build a very safe, fast, and unbounded network world."

Buy or not to buy, that's not a question. Because router is vital in connecting your home's or office's net to net. Surprising, surprising, RouterSwitch.com provide all kinds of brand new, refurbished and used routers and catalyst switch in big discount now, including Cisco 800 series, Cisco 1800 series,Cisco 1900, Cisco 2800, Cisco 2900, Cisco 3500 series routers. buy cisco switch 2960, Cisco 3560, Cisco 3750, Cisco 6500 series switches, etc. Selecting routers and switches at RouterSwitch.com you can save your money up to 55%-98% off list price on April Fools' Day. 5000 plus buyers around the world, great price, huge inventory in stock, up to 1 year warranty, flexible secure payment and shipment, free technical support, those advantages of RouterSwitch.com can let you no hesitate to buy a suitable router from it.


Also you can email to Email: cisco@router-switch.com (Sales Inquiries),  webmaster@router-switch.com (Technical Inquiries), or call 852-3755-6766 (Hong Kong) and Fax:852-3050-1066 (Hong Kong). 


Notes: Maybe everyone who has PCs or Macs is familiar with internet, but not know about routers or cisco catalyst switch. Routers perform the data "traffic directing" functions on the Internet. A data packet is typically passed from router to router through the networks of the Internet until it gets to its destination computer. The most familiar type of routers are home and small office routers that simply pass data, switch cisco such as web pages and email, between the home computers and the owner's cable or DSL modem, which connects to the Internet.

2011年8月3日星期三

How to Select a Very Right Router for Home or Business

No matter which group you belong to or stay with? If you want to connect outside world through computer, buy used router is an essential element of modern home and business networks.Arouter lets your computer connect to the Web to read your favorite Web sites, check e-mail, IM friends, or teleconference with colleagues….

When we speak of routers, I usually think of Cisco---a network giant, even though so many others such as Nortel, D-link, Netgear, etc. Because sell cisco routers is considered as the top choice while choosing a router for home or office, and the more important is that Cisco System offer SOHO, small, medium and large-sized offices or enterprises with different types of routers to meet their different needs.


As we known, the popular refurbished cisco router in the market are Cisco 800 series, Cisco 1800 series, Cisco 1900 series, Cisco 2800, Cisco 2900, Cisco 3800, 3900, 7200 and 7600, etc.(for small to large businesses), also Cisco Linksys-E series for home.

More choice, harder to select the very one for family or for enterprise. But it doesn’t matter if you evaluate and weigh the following eightcriteria that can help you figure out which router best fits your needs.

Your Usage and Router’s Performance
For home or for office (small or large size?), first be clear about it. Different demands require different performance of router. For example, choosing a one for family, you may just want to surf on the internet, cisco refurbished routers no need of a router as a heavy-duty gamer or a small business, Cisco Linksys-E series will fit you. Because you know the more expensive the router, the more features it will contain. However, it doesn’t necessarily buy a higher performance router. And for business, especially for large or head offices, router’s higher performance and safety is vital elements which must be considered while buying. Cisco 1800, 1900, 2800, 2900(for small to medium-sized business or enterprise branch office, Cisco 3800, Cisco 3900, Cisco 7200, Cisco 7600(for medium to large-sized business and enterprise head office), these types can meet companies’ various requirements…

Expandability
The router usually has a default number of interfaces—but some routers, router cisco secondhand such asthe 3600 series, have none. So, pay attention to the number of interfaces youcan add on top of the default.

Router’s Integrated Services
This refers to functionality supported by a router that previously required separate boxes. For example, refurbished cisco routers a 16- or 32-port switching module in a router negates the need for an Ethernet switch; having a firewall, VPN server, and IDS/IPS sensor in a router can negate the need for a firewall, VPNconcentrator, and dedicated IDS/IPS appliance.

Support and Reliability
reset cisco router are traditionallyreliable, and Cisco is always offering a high level of support. When purchasing a router, you will have various levels of support options. Select the best level for your organization.Of course, using these features in your decision-making process requires some research. You could peruse the Cisco router price Product Portfolio, scan through the specifications, and select the router yourself.Or, you could also use the criteria above to work with are seller or directly with Cisco to determine which routers offer the features you need.

Warranties
Router manufacturers always provide a warranty package together with their equipment. The length and terms of these warranties vary widely. A better warranty may indicate a manufacturer more committed to support their products, cisco router sale while a lesser warranty could indicate a somewhat lesser standard of product quality or reliability. Always consider router warranties when making your purchase decision.

Router’s Cost
Router manufacturers or router suppliers (like Cisco router supplier) sometimes offer rebates or other discounts from the full retail price of their routers. So you can buy a suitable router at a very great price while router is at a big discount. cheapest cisco adsl router (Routerswitch.com, hardware.com, often have big discount for hot routers, like Cisco 1800, Cisco 1900, Cisco 2800, Cisco 2900, etc.


Actually, besides considering router’s basic function, performance, quality and style, cisco 2600 you must notice router’s price. So you’d better make a comparison among different routers in order to choose a highly efficient and cost-effective one.

More you need pay attention to while buying a router…