ADSL MODEM TO 56K MODEM

Guys: I'm considering adsl connection here in Australia.

With my current 56k modem on WIndows XP, and using pcAnywhere 10.5 I'm
able to connect to several different modems with separate telephone
numbers & their computers around the city for business purposes.

Will I lose that advantage? Can I still dial up separate 56k modem
connections? Is not, is there a way around it?

Thanks.

Gary

In article <(E-Mail Removed)>,
(E-Mail Removed) said......

> "Dr Gary Forbes, DM.MA." <(E-Mail Removed)> wrote:
>
> >Guys: I'm considering adsl connection here in Australia.
> >
> >With my current 56k modem on WIndows XP, and using pcAnywhere 10.5 I'm
> >able to connect to several different modems with separate telephone
> >numbers & their computers around the city for business purposes.
> >
> >Will I lose that advantage? Can I still dial up separate 56k modem
> >connections? Is not, is there a way around it?
>
>
> The modem will still work but if you are lucky you may get 28 to 32k from
> it, personally I only get 26k now dropped from 45k.
>
> In simple terms the ADSL takes away a large chunk of the pipe for itself
> and the little that is left is not enough for 56k (i.e.42-48k)
>
> Hope this helps
>
> Andy
>
>
???

ADSL should have no effect on a 56k modem, but sometimes drops the speed
slightly. If you are seeing that much of a drop then you have problems
elsewhere.

56k modems have got absolutely nothing to to with the ADSL pipe. As soon
as your bit of copper hits the exchange, ADSL goes one way and analogue
goes another. Apart from which, the ADSL signal is in a different
frequency range to that of the 56k modem.
--
Mugwump

In article <(E-Mail Removed)>, (E-Mail Removed)
wrote:
> The modem will still work but if you are lucky you may get 28 to 32k from
> it, personally I only get 26k now dropped from 45k.
>
> In simple terms the ADSL takes away a large chunk of the pipe for itself
> and the little that is left is not enough for 56k (i.e.42-48k)
>

The ADSL signal shouldn't interfere with the voice/modem channels at all.
If it does, I'd suggest it might be something to do with the quality of
your filter, and it might be worth trying a different one.

Rod.

Roderick Stewart <(E-Mail Removed)> wrote:

>In article <(E-Mail Removed)>, (E-Mail Removed)
>wrote:
>> The modem will still work but if you are lucky you may get 28 to 32k from
>> it, personally I only get 26k now dropped from 45k.
>>
>> In simple terms the ADSL takes away a large chunk of the pipe for itself
>> and the little that is left is not enough for 56k (i.e.42-48k)
>>
>
>The ADSL signal shouldn't interfere with the voice/modem channels at all.
>If it does, I'd suggest it might be something to do with the quality of
>your filter, and it might be worth trying a different one.
>
>Rod.
>

I knew it did not interfere with the 0-20k channel for voice but correct me
if I am wrong I thought that 56k modems used a wider frequency range than
that.

From personal experience I have 1 adsl line in UK, 1 adsl line in Belgium
and 1 in switzerland and these are all shared with modems (Mainly for
faxing)

On the (admittedly) rare occasions I have used the modem for connecting the
figures have shown drops compared to the older figures I got on these
lines. Lines are the same, laptop is the same so I assumed that this was
connected to the adsl connection.

All line in all places are fixed IP address pro level lines with hardware
either built in to the socket or wall mounted splitters. Basically I just
arrive plug in to the router and plug the modem lead in to the wall socket
(POT side obviously)

I will have to have a play at this with different laptops to see if that
makes any difference.

Andy

In article <(E-Mail Removed)>,
(E-Mail Removed) said......

> Roderick Stewart <(E-Mail Removed)> wrote:
>
> >In article <(E-Mail Removed)>, (E-Mail Removed)
> >wrote:
> >> The modem will still work but if you are lucky you may get 28 to 32k from
> >> it, personally I only get 26k now dropped from 45k.
> >>
> >> In simple terms the ADSL takes away a large chunk of the pipe for itself
> >> and the little that is left is not enough for 56k (i.e.42-48k)
> >>
> >
> >The ADSL signal shouldn't interfere with the voice/modem channels at all.
> >If it does, I'd suggest it might be something to do with the quality of
> >your filter, and it might be worth trying a different one.
> >
> >Rod.
> >
>
> I knew it did not interfere with the 0-20k channel for voice but correct me
> if I am wrong I thought that 56k modems used a wider frequency range than
> that.
>

Voice and analogue modems use 0 - 3.4kHz, ADSL uses 20kHz - 2.2Mhz split
into channels.


> From personal experience I have 1 adsl line in UK, 1 adsl line in Belgium
> and 1 in switzerland and these are all shared with modems (Mainly for
> faxing)
>
> On the (admittedly) rare occasions I have used the modem for connecting the
> figures have shown drops compared to the older figures I got on these
> lines. Lines are the same, laptop is the same so I assumed that this was
> connected to the adsl connection.
>

The microfilters tend to be the things that drop your analogue speed.

> All line in all places are fixed IP address pro level lines with hardware
> either built in to the socket or wall mounted splitters. Basically I just
> arrive plug in to the router and plug the modem lead in to the wall socket
> (POT side obviously)
>
> I will have to have a play at this with different laptops to see if that
> makes any difference.
>
> Andy
>

--
Mugwump

In article <(E-Mail Removed)>, (E-Mail Removed)
wrote:
> I knew it did not interfere with the 0-20k channel for voice but correct me
> if I am wrong I thought that 56k modems used a wider frequency range than
> that.

If true, it can't be much wider. In any case, V90 transmission relies heavily
on phase information that wouldn't be particularly important for speech
quality audio, and this would definitely be upset by bad filter design, so it
might still be worth trying a different one to see if there is any
improvement.

Rod.

Thanks Guys - all very helpful.

Gary

TX2 wrote:

> In article <(E-Mail Removed)>, (E-Mail Removed)
> says...
>
>
>>In simple terms the ADSL takes away a large chunk of the pipe for itself
>>and the little that is left is not enough for 56k (i.e.42-48k)
>
>
>
> ???
>
> My 56k speed increased from a previous connection of 44k, to an all time
> high of 48k after I converted to ADSL

In article <u67F0sAGf1T$(E-Mail Removed)>, Les Desser wrote:
> >If true, it can't be much wider. In any case, V90 transmission relies heavily
> >on phase information that wouldn't be particularly important for speech
> >quality audio, and this would definitely be upset by bad filter design, so it
> >might still be worth trying a different one to see if there is any
> >improvement.
> >
> Would it make any sense to connect the modem to the unfiltered line
> behind the filter. The 'noise' of the higher frequencies should not
> bother the modem.
>

I don't think it would hurt anything to try, but I'd be surprised if there was
any improvement. I understand that ADSL modems include a high pass filter, but
I'm not sure about telephone modems.

Rod.