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Some frequently asked questions about broadband......

  1. What is Broadband ... ?
  2. What services are now available in the Broadband ... ?
  3. Who can apply for a Broadband ... ?
  4. What is the advantage of this service for the subscriber... ?
  5. What is the basic requirement at subscriber office ... ?
  6. What is the technology used by BSNL  ... ?
  7. How a Broadband connection is provided...?
  8. Is there any new equipment installed in all the exchanges...?
  9. How to measure the speed of an Internet connection...?
  10. What are the factors affecting speed...?
  11. Can I convert an ISDN line into ADSL...?
  12. What about security...?
  13. What is PPPoE...?
  14. What is contention ratio...?
  15. What can be done with 1 GB download...?
  16. What happens when you initiate a PPPoE connection...?
  17. What is round trip time...?
  18. What is streaming video or audio...?
  19. Why it is called streaming...?
  20. What is Wi-Fi..?
  21. What is WiMax...?
  22. When to choose  USB port modem...?
  23. When to choose  Ethernet port modem... ?
  24. Which is better...?
  25. What is Download / Upload... ?
  26. Why are the Download / upload rates different... ?
  27. How to Secure Your Wireless Broadband Network... ?



        More FAQ....






What is Broadband ... ?

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.



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What services are now available in the Broadband ... ?

Now we offer only an High-speed Internet Access of minimum 256 Kbps and upto a maximum of 2 Mbps.





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Who can apply for a Broadband ... ?

Any customer having a basic BSNL phone (b-fone) can apply for the Broadband Service. 





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What is the advantage of this service for the customer?

A customer's basic land line phone is used for providing this service. He can use his telephone for a normal telephone call even while he is browsing Internet. There is no separate telephone charges for the connection to the Internet. The access to the Internet will be around 8 times faster than a normal dial up access. The advantage is many fold. (i) Cost  (ii) Speed (iii) No setup time (iv) Always On



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What is the basic requirement at subscriber office ... ?

The Customer should be owning apart from a B-fone, a Computer. The Computer should have the following.

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What is the technology used by BSNL  ... ?

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)




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How a Broadband connection is provided...?


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.

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Is there any new equipment installed in all the exchanges...?

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.

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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.

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    What are the factors affecting speed...?

    The following factors may affect the speed of an ADSL connection:

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    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.


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    What about security...?

    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.

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    What is PPPoE...?

    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.


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    What is contention ratio...?

    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.

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    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

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    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




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    What is round trip time...?

    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.

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    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.

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    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."

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    What is Wi-Fi...?

    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.

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    What is WiMax...?

    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.

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    When to choose  USB port modem ?

    Choose USB if

    • You are confident that your operating system won't change
    • You never expect to need to attach more than one device or share your internet connection with more than one pc.




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    When to choose  Ethernet port modem ?

    Choose Ethernet if

    • You plan to share your Internet connection with additional computers, a gaming console or other devices
    • You want the security of a hardware firewall, protecting your network and attached computers
    • You plan to add wireless connectivity to your home network



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    Which is better?

    • Ethernet is the preferred option for connecting a Broadband modem for the following reasons:
    • Ethernet is technically more reliable than USB for networking. You are less likely to get dropped connections or sluggish response time to your modem when using Ethernet over USB
    • Ethernet cable can reach a longer distance than USB cable. While a single Ethernet cable can run technically up to 100Metre while USB cable is limited to approximately 5Mt
    • Ethernet does not require the installation of device driver software while the USB does. Modern operating systems will be capable of automatically installing drivers for many broadband modems. However the procedure varies on different operating systems and not all systems will be compatible with a given brand of modem.
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    What is Download / Upload ?

    • When the information flows from somewhere e.g. a web-page or a site to your PC you are downloading on the other hand when you send information e.g. request for a web-page, you are uploading
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    Why are the Download / Upload rates different?

    • ADSL is an asymmetric technology giving different rates in down and up directions. This is perfectly fine since we download(browsing, downloading clips, music etc) much more than we upload(a website address, a few clicks etc)


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     How to Secure Your Wireless Broadband network ?

    • Changing the Configuration Page's Password

      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.

      Disabling the Broadcasting of Your SSID

      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.


      Changing the Default IP Number of the Wireless Access Point or Router

      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.


      Enabling WEP or WPA Encryption

      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.


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