IP Swift / Rapid

f0zzy

Can anyone tell me difference between IP Swift and IP Rapid delivery methods for DSL ?

Is one better (less contention etc) than the other ?

Thanks

F0z

roast

Yep.
Swift is 12:1 contention, 12Mb down 1Mb up, while Rapid is 48:1, 7Mb down, 384Kb up.

f0zzy

Thanks Roast. Strange. I was told I could switch to 12Mb but would require physical connection change in the exchange and odds are I'd get a worse service. Apparently this delivery method suffers from higher contention but your post suggests it would be less.

roast

Well Swift is ADSL2+, while Rapid is ADSL1, so if you're not already on an ADSL2+ port in the exchange, then a physical change would be needed.
The only way you could get a worse connection by changing to Swift is if your line stats are poor and your noise margin is low. It'll creep down a bit because of the speed increase.
What exchange are you on and what are your line stats?

watty

Broadband forum better for this.

[Edit: Sorry for thoughtlessly posting on thread instead of Report Post]

cgarvey

watty wrote: »

Broadband forum better for this.

Can you use the report a post function for this, in future, please. Makes life easier, and doesn't clutter up the thread. Ta to the other poster who gave me the heads up earlier, too.

Happy to leave it here for now. Will reconsider if there's more left to discuss!

f0zzy

roast wrote: »

Well Swift is ADSL2+, while Rapid is ADSL1, so if you're not already on an ADSL2+ port in the exchange, then a physical change would be needed.
The only way you could get a worse connection by changing to Swift is if your line stats are poor and your noise margin is low. It'll creep down a bit because of the speed increase.
What exchange are you on and what are your line stats?

Am on Furbo exchange. Line stats look like:

Line standard G.dmt
Downstream line rate (kbit/s) 7168
Upstream line rate (kbit/s) 384
Downstream SNR (dB) 12.4
Upstream SNR (dB) 16
Downstream line attenuation (dB) 22
Upstream line attenuation (dB) 14.5
Downstream output power (dBmV) 15.8
Upstream output power (dBmV) 0.3
Downstream CRC 15
Upstream CRC 0
Downstream FEC 8052
Upstream FEC 0

roast

If your ISP complies, a change to swift would work, but not reliably at 12Mb down (if at all).
There's a 7.6Mb down, 672Kb up profile on swift, that'd give you a decent increase on upload without affecting the downstream SNR too much, also you'd have 12:1 contention.

f0zzy

roast wrote: »

If your ISP complies, a change to swift would work, but not reliably at 12Mb down (if at all).
There's a 7.6Mb down, 672Kb up profile on swift, that'd give you a decent increase on upload without affecting the downstream SNR too much, also you'd have 12:1 contention.

Thanks Roast. Might try that.

cgarvey

Moved IrelandOffline > Broadband