Advantages of an isdn Line over normal dsl.

[EvilNightHawk3]

I tried to get speakeasy today because i had seen the gamer package and the saleswoman said i could get 144/144 .I meen that isn't even enough to go Pc games and not lag, plus they said the lkine could handle 5 comps all at same time.

1.Price was 129.99 a month also.

2.Dedicated but probably doesn't matter with speeds that low though.

[raptors892004]

If that is not 144Mbits/144Mbits, then I wouldn't get it.. And 130$/month  seems like a very high price for a dedicated line with speeds that low..

[resopalrabotnick]

ok in a nutshell, BS.

the saleswoman needs to get her head examined.

isdn is something completely different from dsl, it is a voice service that is superior to pots.

instead of one line with 1 number isdn gives you 2 lines with multiple numbers. that's probably where the 5 comp number comes from, i guess their basic package gives you 5 phone numbers.

you use the 2 existing wires of the potus to go into the house where you hook up the network terminator that creates the inhouse digital S0 bus. that uses 4 wires. you need isdn capable phones and cards/adapters for the comps, or an inhouse switch that converts isdn back to potus for legacy equipment.

the 144 kbps is theoretically correct, but again, bullshit.

you get 2 b channels with 64 k each and a d channel with 16 k. the d channel is however purely for connection related information and generally not used for data.

hence you get 128 if you bundle the two b channels. (most pc isdn cards can do this)

otherwise it's like having two phone lines with multiple numbers in the house. use one to surf at 64 and one to talk.

advantaes over pots: the connection is made a lot faster, no more modem negotiation since the link is already digital. the 64k speed is not a soft number like a 56k modem, it is what you actually get out of it, the speech quality is better than with pots

you can still get dsl on an isdn line, since the isdn signal uses only slightly more bandwidth on the 2 wires than the pots, and the dsl freqs can still be placed on the line.

that leaves you with a dedicated comp connection via dsl and 2 digital phone lines.

using the link for multiple comps however would mean installing an isdn access router that dials in to the isp on demand and bundles the 2 b channels (leaving you without a phone line) and then distributes to connected comps.

[jay173]

isdn is 128 or 64 up and down

its no better than bissness class modum

didnt know isdn modums are still made?

[resopalrabotnick]

no such thing as an isdn modem. it's called a terminal adapter. no need to modulate/demodulate (MoDem) since it's all digital. and yeah, course they still make em. i cannot understand why isdn isn't rolled out more in the us. out of personal experience installing it in germany isdn is the perfect way to get a second line to a house/app that has only one appartment, besides all the other advantages over pots.

[EvilNightHawk3]

Yes i understand , but why is it so expensive and can it be used for hosting a website or something or just using multiple phone #' .

[resopalrabotnick]

basically the data connection is dialup. just at a fixed 64k per each of the 2 channels. it's generally used for remote monitoring where the device needs to be able to call into a data center quickjly to report a condition and the like, or of course for residential internet and telephony where dsl and the like are unavailable.

[EvilNightHawk3]

Ahh ok , i understand so it is like 2 64k connections in one with another for just phone calls at 16k. To me i would rather go for satellite internet if i was that desperate.

[resopalrabotnick]

no, the 16k is just for protocol data. the 2 lines are voice or 64k data. most terminal adapters can use both lines simultaeneously to get 128k.

[amc11890]

isdn make even sattelite look good

[resopalrabotnick]

except that isdn has a decent ping and routing, whereas a sat connect goes out of this world on its routes.

[EvilNightHawk3]

lol ya that is true.

[amc11890]

yeah i forgot bout that but bandwidth wise sattelite is usually better

[resopalrabotnick]

try plugging a phone into your sattelite hookup. won't get you far. different techs for different needs.

[anox195]

damn, resopalrabotnick is very smart...what do you do for a living?? i always thought isdn was basically a step up from dialup, but that sounds so technical. I also thought that isdn was basically two dialup modems working together...

[resopalrabotnick]

well, isdn is a step up from dialup

its a tech to replace the pots (plain old telephone system) with something a little better. like i said, the main advantage is all you need for the line to the customer is the 2 wires he already has. it takes up a little more bandwidth on the 2 wires, so your theoretical maximum with parallel dsl on that line reduces by a few percent. but the main trick feature is that the signal on the 2 wires gets converted onto a 4 wire bus in the house and all devices connect to that, making the whole setup fully digital for better voice and constant data speed. look it up on howstuffworks or similar site.

the main difference to dialup on analog lines that you will see is that the connect only takes tenths f a second, since the signal is already all digital and no handshake procedure is necessary, and the guaranteed 64 k instead of the soft 56k on analog.