
Originally Posted by
netherwinterknights
Hi,
You must also know the following about ADSL technology which is used in broadband service by BSNL.
>> It is a best effort technology. This means that the advertised speed rates are possible only if the user is located close by the central office or CO (normally, this is the telephone exchange), else speed decreases and noise increases with increasing distance.
>> The ADSL signal has limited range. Since the DSL carrier signal is a high frequency signal over a wired channel, there is a definite loss in terms of signal strength and noise increases. Thus the broadband connection is provided only till a specific distance from the CO.
>> This distance is measured from the wire starting from the CO hub till the end user's location. This is called as Loop Length (LL), and is not the physical distance from CO to user location, but actually the length of wire through which the signal has the travel.
>> you may try the following to improve the ADSL signal reaching your modem thru the telephone wire:
- use the provided DSL filter properly. google search for proper filter connection if you are not sure. the device generally provided with the modem is a splitter, which splits the dsl signal and voice signal. so, it is a 2 point extender, with one point filtered. you should have a filter on all instruments except the modem.
- if filtering does not work, then disconnect all telephone instruments, and any other device connected to all the phone jacks in your house. see if the connection is more stable after this.
- secondly, try using a shorter wire from phone jack to the modem, preferably less than 6 feet.
- also, try isolating modem from other electronic devices which generate massive magnetic fields, like TV, Microwave ovens, Cordless phones, amplifiers or unshielded speakers, fan regulators, etc.
- ideally, you should also get the local telephone exchange to send a person to check if there are any issues with the line such as joints, etc. tell them you will pay some sort of baksheesh if needed.
Hope that these steps help you to improve the issue.