India Broadband Forum

SledgeHammer · 11-28-09, 12:45 PM

Last week, after some thunder-showers & lightning my phone went dead that means there was no dial tone and I was unable to make/receive any calls. I tried both the telephones in my home so as to make sure that it's not the fault at the equipment side.

But when I dialled my Dataone, it was working fine as usual. I had always heard & believed that you need to have dial tone for the phone to work from my dialup-days. The next day, I complained to the BSNL & the phone was working fine from the next day onwards. :thumbup1:
So what is the technical reason behind this ?

Is it because of the Voice frequency band went kaput because of any hardware fault and the DSLAM was working fine ?

rsk11584 · 11-28-09, 08:09 PM

Yes same with me too dear ;-) but its a boon that inspite of no dial tone / fone being dead our ADSL light is on, even in chennai two times this happened with my telephone and both times it happened on saturdays so till monday the phone could not be repaired, but the internet was working. ;-) Telephones people mentioned that due to lighting some problem happened and many telephones had to be restored, but even dont know howcome BB was not affected.

Dont know the reason, but thank god atleast broadband was not affected by the lightining and we could surf internet

SledgeHammer · 11-29-09, 09:41 AM

I'm curious. Does this happens only with BSNL or with other providers also ?

just4kix · 12-02-09, 04:56 PM

This will happen in case of any ADSL provider. The voice and data circuits are different. Only in case when there is a physical damage to the telephone cable, then both services will be affected.

deepmohan · 12-02-09, 08:17 PM

ADSL utilize frequencies that are not used by a voice telephone call. A splitter - or microfilter - allows a single telephone connection to be used for both ADSL service and voice calls at the same time.

birender · 12-04-09, 02:40 PM

Quote:

Originally Posted by SledgeHammer

Last week, after some thunder-showers & lightning my phone went dead that means there was no dial tone and I was unable to make/receive any calls. I tried both the telephones in my home so as to make sure that it's not the fault at the equipment side.

But when I dialled my Dataone, it was working fine as usual. I had always heard & believed that you need to have dial tone for the phone to work from my dialup-days. The next day, I complained to the BSNL & the phone was working fine from the next day onwards. :thumbup1:
So what is the technical reason behind this ?

Is it because of the Voice frequency band went kaput because of any hardware fault and the DSLAM was working fine ?

BSNL provide internet on existing phone line and it comes from Exchange and they have Cards installed in exchange as for voice based (Phone) purpose and the same cable relay from the same card. if exchange having any issue like card is not getting response from the PSTN network then it become silent. this is the issue not hardware problem at customers if customer checked the line with different equipment.

Birender

11-28-09, 12:45 PM	#1
SledgeHammer Bronze Member Join Date: Sep 2008 Location: Cochin Age: 26 Posts: 185 Rep Power: 2	Myth busted : You need to have Dial tone for the ADSL to work ! Last week, after some thunder-showers & lightning my phone went dead that means there was no dial tone and I was unable to make/receive any calls. I tried both the telephones in my home so as to make sure that it's not the fault at the equipment side. But when I dialled my Dataone, it was working fine as usual. I had always heard & believed that you need to have dial tone for the phone to work from my dialup-days. The next day, I complained to the BSNL & the phone was working fine from the next day onwards. :thumbup1: So what is the technical reason behind this ? Is it because of the Voice frequency band went kaput because of any hardware fault and the DSLAM was working fine ?

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11-28-09, 08:09 PM	#2
rsk11584 Junior Member Join Date: Jul 2009 Location: chennai Age: 25 Posts: 35 Rep Power: 1	Yes same with me too dear ;-) but its a boon that inspite of no dial tone / fone being dead our ADSL light is on, even in chennai two times this happened with my telephone and both times it happened on saturdays so till monday the phone could not be repaired, but the internet was working. ;-) Telephones people mentioned that due to lighting some problem happened and many telephones had to be restored, but even dont know howcome BB was not affected. Dont know the reason, but thank god atleast broadband was not affected by the lightining and we could surf internet

11-29-09, 09:41 AM	#3
SledgeHammer Bronze Member Join Date: Sep 2008 Location: Cochin Age: 26 Posts: 185 Rep Power: 2	I'm curious. Does this happens only with BSNL or with other providers also ?

12-02-09, 04:56 PM	#4
just4kix Platinum Member Join Date: Dec 2007 Location: Pune Posts: 9,027 Blog Entries: 6 Rep Power: 21	This will happen in case of any ADSL provider. The voice and data circuits are different. Only in case when there is a physical damage to the telephone cable, then both services will be affected.

12-02-09, 08:17 PM	#5
deepmohan Its Time To Change ! Join Date: Jan 2009 Location: Chennai Posts: 1,211 Rep Power: 5	ADSL utilize frequencies that are not used by a voice telephone call. A splitter - or microfilter - allows a single telephone connection to be used for both ADSL service and voice calls at the same time.

India Broadband Forum

Myth busted : You need to have Dial tone for the ADSL to work !

Myth busted : You need to have Dial tone for the ADSL to work !