What is evdo card

The main benefit of having an EVDO card is that you can get Internet access on a laptop anywhere that you can get a cellphone signal from the relevant network. For most users, this will mean access is available in more locations than if they rely on wireless networks such as Wi-Fi. Speeds through an EVDO card vary, but are generally comparable to that available on basic broadband packages for home users through fixed-line connection such as a phone line or cable.

While the phrase EVDO card is often used, most devices are not strictly cards in the sense of being permanently installed in a computer. Instead the most common form is as a USB device similar in design to a memory stick. The device combines an antenna and a modem. Because the device is self-contained and removable, a user can get broadband access on any computer.

Depending on the EVDO dongle or the version of the driver software installed, you may or may not get support for a virtual dialer pad, which is sometimes useful for executing service specific USSD codes. Once the required settings have been configured, you can get connected to the Internet in one click. If you want to use the EVDO Internet connection on a platform for which suitable driver software is not available. Or if you want to use the connection simultaneously on multiple devices, a feasible solution is to tether it over WiFi.

However, not all dongles are compatible with every WiFi router. There may also be other compatible router-dongle combinations which are not mentioned here. If you do find such a combination, do let us know in the comments section. Once the spot is found, you can set up the WiFi router there. So these sites are not suitable for EVDO recharge. If your EVDO Card was applied from a different zone, you might not be able to register in this portal. Although, if successfully registered, you can recharge your EVDO without bar.

If you need to extend the validity of your EVDO connection, try recharging it online. Note: The tariff plans mentioned above are subject to change without any prior notice.

To know about the latest tariff plans offered by BSNL, visit this page or call customer support for assistance. Smartphones are equipped with WiFi and cellular data options, so that we can stay connected to the Internet on-the-go.

Just as only so many radio stations can be squeezed onto the FM dial, only so much data can be transmitted across the available bandwidth. As the user load increases, the available frequencies tighten, and users can experience delays, dropped data, and other problems. Thus, providers have been working to find ways to use bandwidth more efficiently without sacrificing clarity and quality for their users.

CDMA uses advanced mathematical techniques to allow multiple wireless devices to transmit simultaneously on the same radio frequency.

Every device, such as a cell phone, is assigned a unique mathematical signature. Transmitters apply this signature to the original signal and send a modified version.

A receiver applies the inverse of the mathematical operation to recover the original signal. The term "CDMA" is used both to refer generally to a channel access method and to the specific technologies that use that method as a backbone for radio transmissions. The intended meaning is usually clear from the context. Traditional wireless networks create a direct path between receiving and sending devices, much like traditional telephone networks.

EVDO instead breaks data into individual packets, the same technique for data handling used on the Internet. Each packet is sent independently of all the other packets. This saves bandwidth for use by other devices; when neither party on a phone call is speaking, for example, the connection consumes no bandwidth. When an Internet site is accessed, no bandwidth is used until the site starts sending the web page.