how-to block ads
Please see AT&T HSI Package History for current info. Below for reference is info on grandfathered packages and old promo profiles.
The normal sync rate for the Express package is:
1.536Mbps Downstream/384Kbps Upstream
The downstream sync rate can be as low as 384Kbps
The upstream sync rate can be as low as 128Kbps
The normal sync rate for the Pro package is:
3008Mbps Downstream/512Kbps Upstream
The downstream sync rate can be as low as 1.536Mbps
The upstream sync rate can be as low as 384Kbps
As of 2-8-04 Ameritech /SBC has 7 Packages
The most popular package Standard Plus is used in this discussion:
Download Sync Rate (range) 384Kbps up to 1.5Mbps
Upload Sync Rate (range) 128Kbps up to 256Kbps
SBC is currently increasing the upload sync rates and changing back to RADSL.
Your modem sync rate (the capacity of the DSL connection from the Network Interface Device/NID at your home to the DSL Access Multiplexer/DSLAM or Remote Gateway/RT equipment in SBC's network) is different, though.
The sync rate is set at the DSLAM in the Central Office or at the Remote Terminal line card and can be as high as 1536kbps/256kbps for the 384-1.5/128-256kbps package. If you are not getting these maximum rates, your line cannot support the maximum sync rate due to distance, line disturbances (bridge taps most likely)or wiring inside your home or office.
When you want to check your speed use the SBC Speed Test Page you'll need Java support for it to work.
NOTE: Keep in mind that SBC advertises a "Sync Rate" and not results you get on a speed test or any other tests. Some modems will display the Sync Rate....some don't...........Expect to "see" 80%-85% of Sync Rate as a speed test result.
"Only a trained technician using special equipment can test the sync rate."
Original content provided by Radio Doc
Ameritech currently has two "speed profiles": 768 down/128 up and 1500 down/256 up. Your modem or router sync rate (the "speed" it transfers all those bits) is different, though. The sync rate is set at the DSLAM in the Central Office or Pronto Remote Terminal (RT) line card and should be 896 (768)/160 for the 768/128 package or 1760 (1536)/288 for the 1500/256 package (RT speed in ()). If you are not getting these rates, your line cannot support full speed due to distance, line disturbances (bridge taps most likely) or wiring inside your
home or office.As of 3-8-02, a new 1536/288 and 768/160 CO DSLAM profile is also be in use, making CO and RT installs the same.
This should not materially affect your speed though since the download is still limited to the same cap at the Redback.
The 384/128 package sync is 384/160, while the 4000/384 package is 4032/384 kbits/sec and the Expert Plus package is 6016/608.
NOTE: These are the speeds advertised, not what you get on a speed test or any other test than what the modem and DSLAM say the have synced to. Expect to "see" 80%-85% of sync as a usable "payload" rate.
Feedback received on this FAQ entry: