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TalkTalk Wholesale Line Profiles: Difference between revisions

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[[File:Tt-profile-list.png|border|200px]]
[[File:Tt-profile-list.png|border|200px]]


==Understanding the Profile Names==


Annex A line profiles are of the form:
XYYY_SNR_DDD_UUU_Protocol

Where:
*X denotes the adaptive setting. If this is S then the profile is dynamic, if this F then the profile is fixed.
*YYY denotes the Interleaving settings.
*F indicates that interleaving hasn’t been applied and that this is a fast profile.
*I followed by a number indicates the size of the interleaving delay. The greater the number the greater the interleaving applied.
*SNR denotes the target Signal to Noise Margin. Where this is a single number, this number indicates the target for both upstream and downstream, where there are two, the first indicates downstream and the second indicates upstream.
*The lower the number the greater the achievable line rate, the higher the number the higher the number then the lower the achievable line rate. Note: Some fixed profiles omit the SNR property from their name, where this is the case their target margin is 6dB.
*DDD indicates the maximum download speed.
*UUU indicates the maximum upload speed.
*Protocol indicates if the profile is tied to a specific ADSL protocol. Where this is negated, the profile will negotiate with the CPE starting at ADSL2+ and working down to G.DMT.




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