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- What does ADSL stand for?
- What is ADSL?
- How does it work?
- Do I still have to pay phone bill if I get ADSL?
- What can I do with it?
- What is the difference between ADSL and DSL?
- What is the function of the micro-filters, supplied together with my ADSL modem?
- How do I connect the micro-filter?
- What does ADSL stand for?
Asymmetric Digital Subscriber Line.
- What is ADSL?
ADSL is a broadband connection technology which utilises existing copper wired telephone networks. ADSL uses a wide range of frequencies over an existing telephone line to deliver much higher speeds than your standard 56k modem (between 10 and 40 times faster). You can use your phone while surfing Internet.
- How does it work?
The service makes use of your existing telephone line. It splits the signal into two channels, one for voice communications and the other for the high speed data connection. It makes use of a frequency range not used in normal voice communications:
Voice: 0 - 20 kHz
Data: 25.875 kHz - 1.104 MHz
Graphically, it looks like this:
Khz 0 20 40 60 80 100 120 140
PSTN <---->
ISDN <--------->
ADSL <----------------------- upwards to 1.104 MHz
- Do I still have to pay the telephone bill if I use ADSL?
No. Only if you use the dialup account provided free with your broadband account.
- What can I do with it?
A simple answer to this would be: Anything you are doing now with your 56K connection, just much faster. However, you can do things that wouldn't be viable on a dialup connection:
- Play online games with much lower latency.
- Multitask - download a file, browse the web, check email at the same time - all still much quicker than using a dial up connection.
- Streaming media - You can now watch high quality streaming media on your PC such as music videos, movie trailers, concerts, and etc
- Some users now leave their systems running 24/7 and operate their pc remotely.
- What is the difference between ADSL and DSL?
ADSL is a type of DSL where the upstream and downstream speeds differ.
- What is the function of the micro-filter supplied with my ADSL modem?
When you subscribe to SingNet Broadband, your home telephone line will be converted to an ADSL line. A micro-filter is used in conjunction with your phone line to improve your SingNet Broadband connection quality. It filters away high frequencies, so that the ADSL signal will not be affected when the telephone is in use. As a result, your telephone line can be used to surf the Internet at high speeds and at the same time, you can make or receive phone calls, all without interference.
Following are the 2 common types of microfilter:
- How do I connect the micro-filter?
It is connected between the telephone wall socket and analog device (for example, telephone set, analog dial-up modem etc). Not using a micro-filter may cause disturbances to the SingNet Broadband connection. As a result, the ADSL line may end up resynchronising continuously when the analog device is in use.
Following are the 2 common types of microfilter setup:
Click here to see more detail on microfilter setups
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