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qwest has the 256/256 and the 1.5/896 services. But they use interleaving. Not good for gaming.

Just want to explain interleaving for those who don't know.

Quote from dslreports.com  :: written by Justin

ADSL modems commonly employ data Interleaving, which is a technique to increase resistance to noise bursts on a line. Interleaving "smears" out micro bits of data (interleaves them over time) so that a short burst of signal destroying noise can only remove part of any given larger block. Data blocks reserve some space for error-correction data.. which can salvage a partially damaged block. Interleaving increases the chance that noise on the line will only cause partial damage, not complete loss. Thats the good news.

The down-side of Interleaving is that it increases latency! this is because your little (say) quake movement packet is smeared out over several packets before it can be fully sent or fully received.

ADSL modems with typical Interleaving defaults can be 10-30ms behind in latency over equivalent speed SDSL modems... this means latency to any point for some ADSL modems can be at best 50ms! On the same setup, the aforementioned SDSL modems that typically add only 10ms. So for use of a nearby server, ADSL Interleaving can be the biggest single source of latency that you have.

Unfortunately, there is little clear information supplied with, or available on-line, about what latency a given DSL modem or ISP connection has built-in.

Some ADSL modems allow the user to turn off Interleaving, or turn it down to a narrow range, at the expense of possible data-loss on noisy lines. The Cisco 675, for example, has a full operating system inside it, and one of the attributes of the ether interface is Interleaving. See Randy Lutton's US West page). Some ISPs may be delivering this unit with Interleaving on, and some off. In other cases, it is the DSLAM (central office equipment) that has the Interleaving set, and this cannot be changed.

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  • 3 months later...

This what I get with Qwest. :headbang:

:::.. Download Stats ..:::

Connection is:: 5320 Kbps about 5.3 Mbps (tested with 2992 kB)

Download Speed is:: 649 kB/s

Tested From:: https://testmy.net/ (main)

Test Time:: Wed May 25 19:15:10 CDT 2005

Bottom Line:: 95X faster than 56K 1MB download in 1.58 sec

Diagnosis: Awesome! 20% + : 293.78 % faster than the average for host (qwest.net)

Validation Link:: https://testmy.net/stats/id-C6Z7IOXDK

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  • 4 weeks later...

::8000ft out with 1 bridge tap

:.. Download Stats ..:::

Connection is:: 5064 Kbps about 5.1 Mbps (tested with 2992 kB)

Download Speed is:: 618 kB/s

Tested From:: https://testmy.net/ (server1)

Test Time:: Tue Jun 21 22:57:13 MDT 2005

Bottom Line:: 90X faster than 56K 1MB download in 1.66 sec

Diagnosis: Awesome! 20% + : 227.34 % faster than the average for host (qwest.net)

Validation Link:: https://testmy.net/stats/id-06MEJPAGS

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  • 1 month later...

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