And I'll be the first to admit I'm guessing now:
Surely before the ISP's wire, there is the telephone company's line ? Most telephone companies that I know of, have an internet site whereby you can check the current ADSL status of your telephone line/telephone digital exchange.
According to the [b]Nepal Telecom[/b] site, there is this advice:
[b]Attention (Very Important):
To check if your ADSL line is working, the ADSL led will first blink and then glow continuously after you connect your Modem/CPE to the phone line.
If there is no response showing (no continuous glow) in the ADSL Led of your Modem/CPE, Please contact the corresponding NT MDF (local exchange) to query if there is any problem in your ADSL line.[/b]
http://www.ntc.net.np/adsl/adsl_intro.php
I suggest you follow the advice and check with your telephone company first, before disassembling your domestic hook-up. ;)