ISDN Tech Qestion...

ISDN Tech Qestion...

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ISDN Tech Qestion... nanotecher 04-01-2006
Posted by nanotecher on April 1, 2006, 12:41 am
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Puchased a 3ComImpactIQ ISDN. I noticed it's output to my compuuting
platform is a serial cable. I think they were planning to hook-up to a
Bill Gates machine. Here's my question: Is there a 'broadband wirelss
router' on the market that will accept a serial cable as input??? I
want to use the ISDN line with multiple Steve Job type machines. IE"
Mac Powerbook G4, and a Mac I-Book G4 both of which use Airport
technology very well. I don't want to have to teather either machine
to the ISDN modem, and can't anyway because these don't have Serial
ports.

Any suggestions or ideas will be greatly appreciated.

Thanks


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Posted by Bob on April 1, 2006, 2:30 pm
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nanotecher wrote:
> Puchased a 3ComImpactIQ ISDN. I noticed it's output to my compuuting
> platform is a serial cable. I think they were planning to hook-up to a
> Bill Gates machine. Here's my question: Is there a 'broadband wirelss
> router' on the market that will accept a serial cable as input???

In the late '90s 3com made an ISDN LAN Modem that connects to anything
with an Ethernet interface. I don't know if they're still made, but you
may be able to find a used one. You can then connect a wireless router
or access point to the LAN modem.

Posted by Doug McIntyre on April 1, 2006, 6:52 pm
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>Puchased a 3ComImpactIQ ISDN. I noticed it's output to my compuuting
>platform is a serial cable. I think they were planning to hook-up to a
>Bill Gates machine. Here's my question: Is there a 'broadband wirelss
>router' on the market that will accept a serial cable as input??? I
>want to use the ISDN line with multiple Steve Job type machines. IE"
>Mac Powerbook G4, and a Mac I-Book G4 both of which use Airport
>technology very well. I don't want to have to teather either machine
>to the ISDN modem, and can't anyway because these don't have Serial
>ports.

You bought the wrong thing. What you bought was a TerminalAdaptor.
Ie. a modem just like a V.92 thing or whatever. Mac can talk to just
fine on an ImpactIQ, you probably just have to get a USB serial port
for your Mac, program the thing with the proper AT commands (the 3com
wizard thing only runs on windows) and save it out first, and dialout
on it.

Sure, you can buy a router that has a serial port, Cisco's sold a
bazillion of them, as well as many others. But going this route is
going to be a big hack, and prone to failure. Also, most serial
routers are going to restrict your speed back some, as I haven't seen
a router that will take 230kbps async data in (even if the ImpactIQ
can do it in a certain mode). They'll be set to 115.2kbps which means
you have to setup the ImpactIQ to do 56k channels, for a max speed of
112kbps on the ISDN line.

You could even turn your Mac into its own router, and after getting
the mac a new serial port to talk out to the ImpactIQ, turn on
Internet Connection Sharing, and have everything NAT out through the
one machine.

But, why go through all that trouble, when you can buy an ISDN router
for a few bucks on eBay?

Return the ImpactIQ, and if you want to stay 3com, get the 3com LAN Modem
(which ironicly enough is a router, while the ImpactIQ is a TA), or
probably more perferably, get a Netopia R3100 ISDN router, or a Cisco 804
ISDN router. The Netopia routers are maybe $10 on eBay. The cisco's
generally go for more, and are harder to program unless you a familure
with cisco.

Much much easier to use purposely built all-in-one devices to do it
for you, rather than figuring out all the stuff needed to hack
together a solution, swearing all the way.

Posted by danny burstein on April 1, 2006, 7:11 pm
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>>Puchased a 3ComImpactIQ ISDN. I noticed it's output to my compuuting
>>platform is a serial cable.

It should also have USB, which willwork with your MAC.

(At least all the ones I used had it... It's possible some
models didn't).

>>router' on the market that will accept a serial cable as input??? I
>>want to use the ISDN line with multiple Steve Job type machines. IE"
>>Mac Powerbook G4, and a Mac I-Book G4 both of which use Airport
>>technology very well. I don't want to have to teather either machine
>>to the ISDN modem, and can't anyway because these don't have Serial
>>ports.

If it's got USB then you can kind-of tie down
one machine to it, and then.... set up that machine
as an Aiport Software Base Station.

This lets you both use that machine (which, again, needs
to be on and hooked up to the Impact), and... lets
you run any Airport (or 802.11) system that's
within range.

- that's exactly what I was doing....

IMPORTANT NOTE: if you're paying for ISDN "per phone call", or
if it's a timed per-minute line, be very, very, careful.

--
_____________________________________________________
Knowledge may be power, but communications is the key
                 dannyb@panix.com
[to foil spammers, my address has been double rot-13 encoded]

Posted by ZmZmCar on April 2, 2006, 11:32 pm
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>
> >>Puchased a 3ComImpactIQ ISDN. I noticed it's output to my compuuting
> >>platform is a serial cable.
>
> It should also have USB, which willwork with your MAC.
>
> (At least all the ones I used had it... It's possible some
> models didn't).
>
> >>router' on the market that will accept a serial cable as input??? I
> >>want to use the ISDN line with multiple Steve Job type machines. IE"
> >>Mac Powerbook G4, and a Mac I-Book G4 both of which use Airport
> >>technology very well. I don't want to have to teather either machine
> >>to the ISDN modem, and can't anyway because these don't have Serial
> >>ports.
>
> If it's got USB then you can kind-of tie down
> one machine to it, and then.... set up that machine
> as an Aiport Software Base Station.
>
> This lets you both use that machine (which, again, needs
> to be on and hooked up to the Impact), and... lets
> you run any Airport (or 802.11) system that's
> within range.
>
> - that's exactly what I was doing....
>
> IMPORTANT NOTE: if you're paying for ISDN "per phone call", or
> if it's a timed per-minute line, be very, very, careful.
>
>

I can send you an Ascend 75 and/or 50 unit which is Ehternet and ISDN.
Let me know.

...Michael
--
--
Michael @ Fast Cars
AKA - ZmZmCar

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