Broadband and Dial up.

Is this possible?
When mine (brooadband) was installed I was told to delete all my dialup
connection entries (against my wishes) however I have added
some since, but not used them.
Can I use them or will it confuse my computer?
Could I just plug in my telephone modem now and dial one up
(whilst still connected by my cable modem) or would I
have to disconnect the cable modem (which causes my
computer to crash, I believe).
I guess I could try but, that would cost a few pence :O)

Cheaper to ask.




Donald McTrevor

Donald McTrevor wrote:

> Is this possible?
> When mine (brooadband) was installed I was told to delete all my dialup
> connection entries (against my wishes) however I have added
> some since, but not used them.
> Can I use them or will it confuse my computer?
> Could I just plug in my telephone modem now and dial one up
> (whilst still connected by my cable modem) or would I
> have to disconnect the cable modem (which causes my
> computer to crash, I believe).
> I guess I could try but, that would cost a few pence :O)
>
> Cheaper to ask.

Unless you set up some special routing to split your traffic between cable
& dialup you're likely to get things very confused. You don't say what
OS you're using, but I believe most versions of Windows can't handle
routing very well. I tried something similar with Linux once, but I
didn't manage to get it to work.

It might be worth keeping the dialup connections & modem as a backup in
case the cable modem fails sometime.
--
Alex Monro, Exeter, UK Life is like Windows - the documentation
alexm at pobox dot com (No HTML) is useless, and it crashes horribly
Running on GNU/Linux (SuSE 8.2) from time to time...
GPG key 68F8 6270 available from hkp://blackhole.pca.dfn.de

On Tue, 28 Jun 2005 09:39:18 +0100, Alex Monro
<(E-Mail Removed)> wrote:

>Donald McTrevor wrote:
>
>> Is this possible?
>> When mine (brooadband) was installed I was told to delete all my dialup
>> connection entries (against my wishes) however I have added
>> some since, but not used them.
>> Can I use them or will it confuse my computer?
>> Could I just plug in my telephone modem now and dial one up
>> (whilst still connected by my cable modem) or would I
>> have to disconnect the cable modem (which causes my
>> computer to crash, I believe).
>> I guess I could try but, that would cost a few pence :O)
>>
>> Cheaper to ask.
>
>Unless you set up some special routing to split your traffic between cable
>& dialup you're likely to get things very confused. You don't say what
>OS you're using, but I believe most versions of Windows can't handle
>routing very well. I tried something similar with Linux once, but I
>didn't manage to get it to work.
>
>It might be worth keeping the dialup connections & modem as a backup in
>case the cable modem fails sometime.

I regularly do a dial-up to one particular ISP whilst connected on
broadband to a different ISP. (I have a small web site on the dial-up
ISP). With nothing especially setup the dial-up connection seems to
take precedence. My broadband connection uses a network card.





--
AnthonyL

"AnthonyL" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> On Tue, 28 Jun 2005 09:39:18 +0100, Alex Monro
> <(E-Mail Removed)> wrote:
>
> >Donald McTrevor wrote:
> >
> >> Is this possible?
> >> When mine (brooadband) was installed I was told to delete all my dialup
> >> connection entries (against my wishes) however I have added
> >> some since, but not used them.
> >> Can I use them or will it confuse my computer?
> >> Could I just plug in my telephone modem now and dial one up
> >> (whilst still connected by my cable modem) or would I
> >> have to disconnect the cable modem (which causes my
> >> computer to crash, I believe).
> >> I guess I could try but, that would cost a few pence :O)
> >>
> >> Cheaper to ask.
> >
> >Unless you set up some special routing to split your traffic between
cable
> >& dialup you're likely to get things very confused. You don't say what
> >OS you're using, but I believe most versions of Windows can't handle
> >routing very well. I tried something similar with Linux once, but I
> >didn't manage to get it to work.
> >
> >It might be worth keeping the dialup connections & modem as a backup in
> >case the cable modem fails sometime.
>
> I regularly do a dial-up to one particular ISP whilst connected on
> broadband to a different ISP. (I have a small web site on the dial-up
> ISP). With nothing especially setup the dial-up connection seems to
> take precedence. My broadband connection uses a network card.

I am using windows98,
I thought that this might be possible.
There is nothing in theory as to why it should not happen.
(barring microsoft et all being shhhhite).
Not sure what you mean my takke precedence, both can exist
at the same time?
It is always useful to have a backup.
I will give it a try sometime.

>
>
>
>
>
> --
> AnthonyL

> Is this possible?

Certainly possible. Both at the same time if you so wish.

> When mine (brooadband) was installed I was told to delete all my dialup
> connection entries (against my wishes)

The guy was a muppet.

--
Please add "[newsgroup]" in the subject of any personal replies via email
--- My new email address has "ngspamtrap" & @btinternet.com in it ;-) ---

"Colin Wilson" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) t...
>> Is this possible?
>
> Certainly possible. Both at the same time if you so wish.
>
>> When mine (brooadband) was installed I was told to delete all my dialup
>> connection entries (against my wishes)
>
> The guy was a muppet.

Indeed he was. The only dialler entry that would become superfluous (but
it's OK to keep it there) is one which dials to a freephone number, because
most ISPs remove your access to this at the same time as upgrading you to
broadband. However you retain the ability to dial up on a pay-as-you-go
number.


I'm not too sure how TCP would react if you had a broadband and a dialup
session at the same time. It would probably do one of two things: a)
initally send packets over both transports and learn that it always got a
faster response over broadband and so use it; or b) send packets randomly
according to which transport had no packets queued to send, thus sending
most data over broadband and occasional packets over dialup. It's a similar
situation to a PC with both a cable and a wireless link to a router (eg take
your PC which has a wireless link established and plug it into a LAN) - I
imagine traffic ends up being sent mainly or exclusively over the faster
link.

> I'm not too sure how TCP would react if you had a broadband and a dialup
> session at the same time. It would probably do one of two things: a)
> initally send packets over both transports and learn that it always got a
> faster response over broadband and so use it; or b) send packets randomly
> according to which transport had no packets queued to send, thus sending
> most data over broadband and occasional packets over dialup. It's a similar
> situation to a PC with both a cable and a wireless link to a router (eg take
> your PC which has a wireless link established and plug it into a LAN) - I
> imagine traffic ends up being sent mainly or exclusively over the faster
> link.

I tried it a while ago, and IIRC, the "newest" connection took precedence
on Win98SE

--
Please add "[newsgroup]" in the subject of any personal replies via email
--- My new email address has "ngspamtrap" & @btinternet.com in it ;-) ---

On Tue, 28 Jun 2005 09:39:18 +0100, Alex Monro
<(E-Mail Removed)> wrote:

[snip]

>It might be worth keeping the dialup connections & modem as a backup in
>case the cable modem fails sometime.

Also very useful to get on to your ISP's website to find out if a
connectivity problem is at their end.

John

--
John Ewing
Glaschu / Glasgow
Alba / Scotland

"Colin Wilson" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) t...
> > Is this possible?
>
> Certainly possible. Both at the same time if you so wish.
>
> > When mine (brooadband) was installed I was told to delete all my dialup
> > connection entries (against my wishes)
>
> The guy was a muppet.

True I kind of realised this, however I had little choice but to
follow his instructions, especially as there could have been a
genuine reason for this.
I guess leaving me with no backup connection it would make
me more reliant on there suppport (presumably at premium rates).
However I have not really needed a backup so far but I don't want
to put all my eggs in one basket.
>
> --
> Please add "[newsgroup]" in the subject of any personal replies via email
> --- My new email address has "ngspamtrap" & @btinternet.com in it ;-) ---

"Martin Underwood" <(E-Mail Removed)> wrote in message
news:42c192cf$0$17891$(E-Mail Removed)...
> "Colin Wilson" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed) t...
> >> Is this possible?
> >
> > Certainly possible. Both at the same time if you so wish.
> >
> >> When mine (brooadband) was installed I was told to delete all my dialup
> >> connection entries (against my wishes)
> >
> > The guy was a muppet.
>
> Indeed he was. The only dialler entry that would become superfluous (but
> it's OK to keep it there) is one which dials to a freephone number,
because
> most ISPs remove your access to this at the same time as upgrading you to
> broadband. However you retain the ability to dial up on a pay-as-you-go
> number.
>
>
> I'm not too sure how TCP would react if you had a broadband and a dialup
> session at the same time. It would probably do one of two things: a)
> initally send packets over both transports and learn that it always got a
> faster response over broadband and so use it; or b) send packets randomly
> according to which transport had no packets queued to send, thus sending
> most data over broadband and occasional packets over dialup. It's a
similar
> situation to a PC with both a cable and a wireless link to a router (eg
take
> your PC which has a wireless link established and plug it into a LAN) - I
> imagine traffic ends up being sent mainly or exclusively over the faster
> link.

Yes I recall there is some 7 layer model for comms, although only a few
may be used, its quite a compliacted thing which I would have thought
would cover things like this but... I guess if you have two lines of
communication open things get rather confusing as there is no way you
can specify which 'link' to use.
Obviously with dial up you can hang up, but with a cable modem its not
so simple. I seem to recall that if I disconnect the cable modem it
causes major problems essentially 'disable' the computer entirely.
I am not sure if this would happen if I had a dial up conection at the
same time.
Also I doon't think my computer will boot properly if the cable modem
is disconnected. Probably a way around that (one would hope!! (new PC? -
lol))

I will have to look into it and try a few thing out sometime.
>
>