[ILUG] Esat ADSL

[Niall O Broin]

On Friday 13 December 2002 11:28, Conor_D_Wynne at Dell.com wrote:

> Eircon don't have the ISDN variant of ADSL, even though they told me it
> would be in place already when I asked in the summer.
> The via boys have the same prob, coz I asked about it.

Having spoken to someone at the coalface of ADSL in Eircom, they are not even 
considering rolling out ADSL over ISDN at the moment. The problem is that you 
must provision for this, either by dedicating certain ports in a DSLAM for 
ISDN lines (hence they're not available to POTS customers) or by using cards 
in the DSLAM which are compatible with ISDN AND POTS and these are more 
expensive.

If you have an ISDN line and you want DSL, the procedure at the moment is:

1) Change ISDN line back to POTS - you pay for this.

2) Have POTS line tested for ADSL.

3) If line is OK, install ADSL for which you of course pay, through the nose.
If the line is NOT OK you can change back to ISDN - you of course pay for this 
also.

Another alternative is to have another POTS line installed, and have this 
tested for ADSL. If it fails, you get to pay for the installation anyway.

Eircom have been talking for months now about introducing an ADSL ISDN 
service. By this they mean in some way making the above process slightly less 
tedious. Last time I spoke to them they said "The technicians are still 
working on it". The above is all procedural rather than technical - perhaps 
they're trying to come up with some way of testing a copper pair's 
suitability for ADSL while it has ISDN equipment attached to it.

They do not, unfortunately, mean introducing ADSL over ISDN - last time I 
spoke to the man at the coalface, they hadn't even tested that, and 
considering how long they were testing POTS ADSL I wouldn't be holding my 
breath . . .



Niall