BROAD BAND -Data One
A high speed Internet connection with at least 256Kbps speed is termed as a Broadband connection. To be little more technical, a channel may be broadband if it sends a signal without modulation on a carrier. The signal covers the whole range of frequency that medium can carry. The broad band term is now hijacked by the Internet Service Provider. Hence now the term broadband is a term used for high speed Internet access.
Now we offer only an High-speed Internet Access of minimum 256 Kbps and upto a maximum of 2 Mbps.
Any customer having a basic BSNL phone (b-fone) can apply for the Broadband Service.
The Customer should be owning apart from a B-fone, a Computer. The Computer should have the following.
The technology used in the Broadband services is known as ADSL. ADSL (Asymmetric Digital Subscriber Line) is an asymmetrical technology, that allows more bandwidth downstream than upstream. (Normally download speed will be 6 times more than the upload speed)
The commercial officer issues an Advice note for the provision of Broadband services. It comes to the Test Desk at the concerned area telephone exchange. The DSLAM port is jumpered in the exchange and information is passed on - line to IT Cell. IT cell passes the required information to the NIB (National Internet Backbone) creation center via BSNL's Wide Area Network. Once NIB creates the user name and password, it passes back to IT Cell via WAN. IT cell passes the NIB information to the concerned External unit electronically for the provision of the Broadband service. Once the work is completed, the concerned external unit gives the date of completion and the Test Desk closes the Advice note.
Yes. In all the Exchanges necessary equipment DSLAM (Digital Subscriber Line Access Multiplexer) racks have been installed in record time. These equipments have a line side and an equipment side. These two sides are extended to the respective exchange MDF (Main Distribution Frame) wherefrom the customer premises is connected via external cables.
How to measure the speed of an Internet connection...?
Speed can be measured from one of the following sites but remember speed is only relative. A speed test from an arbitrary remote server will tell you about that particular route at that particular time under that particular server load, all things that can and do vary widely. The following sites will be useful for measuring speed of your Internet connection.
What are the factors affecting speed...?
The following factors may affect the speed of an ADSL connection:
Can I convert an ISDN line into ADSL...?
No. We need to convert to a normal telephone line and then ask for a broadband connection.
The user should consider installing a Firewall to protect his system from any potential hackers. As the system is under a permanent connection to Internet, it is open to abuse.
PPPoE stands for point to point protocol over Ethernet. Ethernet refers to the network interface card. The PPPoE can either be installed in the personal computer which uses ADSL modem or the ADSL modem itself can be enabled for the PPPoE. In case of pre configured ADSL modem, we put the username and password in the modem itself so that customer need not use any dialler to connect to the Internet. It is Always-On. The customer's computer need not be installed with any PPPoE software. The customer computer operating system can be anything ranging from Windows to Apple Mac.
To provide a cost effective service - all ADSL services are ?contended? (shared). These contention ratios are applied in the backbone and international part of the network. A commonly applied contention rate is 50 : 1. All customers are guaranteed the ?plan? rate up to the local exchange or the ADSL equipment to which they are connected. On the shared part of the network a 50:1 contention ratio would mean that a 256k connection would be shared by 49 others. In reality this is very unlikely to happen and the customer would find the connection much faster than dial-up modems. ADSL relies on individual users not making unreasonable traffic demands on the network to provide fast access speeds for all. If you are not getting the speed you expect, it can be due to the contention ratio but also to many other factors including the congestion at the remote site you are accessing.
What can be done with 1 GB download...?
One GB is 1024 Megabyte or 1073741824 bytes. You can do the following with 1 GB download limit :
1. An average web page is about 50 kilobytes in size - so you could download around 20,000 web pages for 1 gigabyte.
2. An hour of surfing the web would be around 10 megabytes (200 pages) so you could surf non-stop for about 100 hours for 1 gigabyte.
3. An hour of streamed radio would use about 15-20 megabytes.
4. An hour of streamed video uses around 100-150 megabytes.
5. Playing an online game typically uses about 10-15 megabytes per hour.
6. Emails are very small - so 100 emails would be just 1 megabyte - or 100,000 emails for 1 gigabyte! (of course the attachments count extra)
7. A super-high resolution (5-6 megapixel) digital camera JPEG picture or typical MP3 music file is about 2-3 megabytes so you could download 350-500 of these images/music files for 1 gigabyte.
Very few users would actually exceed the download
What happens when you initiate a PPPoE
connection...?
When you
initiate a PPPoE connection, the session goes like this.
1 - [PADI] - PPPoE Active Discovery Initiation
Client looks for an Access Concentrator.
2 - [PADO] - PPPoE Active Discovery Offer
The nearest Access Concentrator responds with a service offer
3 - [PADR] - PPPoE Active Discovery Request
The client decides on a PADO to respond to, and does so.
4 - [PADS] - PPPoE Active Discovery Session-confirmation
Gives the session confirmation
5 - Session is Started by client
Username and Password is authenticated
The Round Trip Time is the time in milliseconds for a data
packet to travel from your computer to the site and back again. This number can
vary significantly because of the random nature of Internet packet routings and
because of random loads on all the computers that handle each packet.
What is streaming video or audio...?
Streaming video or audio is video (as on television) or sound (as on the radio) delivered over the Internet via a modem or broadband connection.
Why it is called streaming...?
It's called "streaming" because the sound and picture data flow in a digital stream from a server computer to your computer, ready to hear or view in real time, without having to download all of the content before you can enjoy it. It comes to you in a stream of digital bits... hence the term "streaming."
Short form for wireless fidelity is Wi.Fi and is meant to be
used generically when referring of any type of 802.11 network, whether 802.11b,
802.11a, 802.11g, dual-band, etc. The term is created by the Wi-Fi Alliance, an
organization made up of leading wireless equipment and software providers with
the missions of certifying all 802.11-based products for interoperability and
promoting the term Wi-Fi as the global brand name across all markets for any
802.11-based wireless LAN products.
WiMAX is a standards-based wireless technology that provides
high-throughput broadband connections over long distances. WiMAX can be used for
a number of applications, including "last mile" broadband connections, hotspot
and cellular backhaul, and high-speed enterprise connectivity for
businesses.
An implementation of the IEEE 802.16 standard, WiMAX provides
metropolitan area network connectivity at speeds of up to 75 Mb/sec. WiMAX
systems can be used to transmit signal as far as 30 miles. However, on the
average a WiMAX base-station installation will likely cover between three to
five miles.
When to choose USB port modem ?
Choose USB if
When to choose Ethernet port modem ?
Choose Ethernet if
Why are the Download / Upload rates different?
How to Secure Your Wireless Broadband network ?
Every wireless router or access point comes with a built-in configuration page, this will look like an internal web page that is accessed from your web browser. Usually, the password is either blank or says something along the lines of ?admin.? Changing both the username as well as the password is an important step in keeping your wireless broadband connection secure.
Most wireless broadband access points and routers make their SSID public. While this makes it easy to connect to the network, it also announces to everyone that you are using a wireless network. Disabling this broadcasting prevents others from easily knowing that you are using a wireless network for your broadband connection.
Change the default IP number to something different so hackers cannot easily find the configuration menu. The default IP number is something the manufacturer's put in to make the system easy to use. All hackers are familiar with the default IP number, so changing it will help secure your wireless system.
With the WEP (Wired Equivalent Privacy) or WPA (Wi-Fi Protected Access) box options checked off, a user has to have a correct encryption key to connect to the wireless network. WEP comes with different encryption levels, and the higher the level, the more difficult it is to break the encryption code.