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If you are connected to a C.O. (Central Office) rather than an RT (remote terminal) and you start DSL service at or upgrade your speed plan to the following speeds:

• Basic - 768/384
• Express - 1536/384
• Pro - 3008/512,

you will be on a 10-day (all days, not just business days) long speed ramp. The initial starting speeds for these speed ramps, respectively, are as follows: 224/128, 384/384, and 1984/512. The intent of the ramp is to provide a stable DSL sync speed on your line from the start of service and simultaneously test the quality of your line without any disruption of your DSL service. The line is tested and speed is increased as fast as possible within the stricture of insuring uninterrupted service. This speed ramp is NOT a scam nor is it a capped scam by AT&T. See: »[General] A note about ramp up:

The automated speed ramp requires that the modem be kept on 24/7 to complete the speed ramp in the shortest time possible. Any modem outages will simply delay the testing process if the modem happens to be off when the system has scheduled a check on your line. The speed ramp has a 30-day window to complete the 10 days of testing. Typically the speed ramp will jump to the next speed step after three to five days of testing after the initial sync event. The better the line conditions, the faster the speed steps occur. The final speed step, full sync speeds, usually will take place six to ten days after the start.

The Elite speed plan, 6016/768, doesn't have a speed ramp; however, sometimes an order for Elite may be placed on a slower plan if the line isn't distance qualified for Elite. If the line's maxrate speed can be shown to exceed that needed to handle Elite, then the service speed can be moved up to Elite following the speed ramp.

Following the full 10-days of the speed ramp, if your sync speed as reported by your modem (this is NOT the same as throughput speed as reported by a speed test) isn't at the maximum speed you purchased, first post a thread in the appropriate AT&T regional forum with your modem stats and sync speeds. The reason for doing this first is that the speed ramp may have failed due to an inside wiring problem at your residence. You must correct any such problems before your sync speed can be manually raised by a technician in the AT&T Direct forum. If you have a 5100b, 4100, or 4100b Speedstream modem or a Motorola 2210 modem, posting the maxrate results and charts from the DMT tool can help diagnose the cause of the ramp failure: »SBC DSL FAQ »How can I check for the maximum attainable sync speeds with a 5100b/4100 modem?. There are also maxrates and charts reported in the 2Wire modems. For older 2wires (pre-1070b versions), the maxrate can be found at this link: »homeportal/management/link_statistics.html . For 1070b 2Wires and newer versions, this link: »gateway.2wire.net/xslt?PAGE=J42 has the maxrate stats and charts.

If you do not want to correct your inside wiring problems on your own, AT&T will be only too happy to charge you for the fix.

Once you have determined that the failure wasn't caused by an inside wiring problem, then you should post a Trouble thread in AT&T Direct or call AT&T phone support. The Pro speed ramp is especially sensitive to line conditions and frequently will fail on the 1984 speed when the line has much higher maxrate capabilities as shown by your modem's maxrate statistics.

If your sync speeds have reached the maximum at the end of your speed ramp, but your throughput speed tests are at 55% or less of your sync speeds, then you have another problem, possibly an aggregation router profile mismatch. Post in your regional forum for help with this problem.

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by d_l See Profile
last modified: 2009-04-07 22:33:13