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only1adg
Beginner
1,183 Views
Message 1 of 4

21CN up to 20MB connection ADSL2+ Annex A or M ?

Should I set my router to ADSL2+ 992.5 Annex A or M for best results?

 I believe M gives for more upload connectivity speed (3Mbs) but don't know if there is that headroom in the feed BT supply?

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3 REPLIES 3
gouledw
Recognised Expert
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Message 2 of 4

Re: 21CN up to 20MB connection ADSL2+ Annex A or M ?

There would be no point changing it to Annex M because it is not available as a BT Residential customer, you would need to go to BT Business for Annex M.  And also it sacrifices some of your Downstream speed for the extra upload speed.

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only1adg
Beginner
1,164 Views
Message 3 of 4

Re: 21CN up to 20MB connection ADSL2+ Annex A or M ?

ok thanks for that Edd, interesting, no such thing as a free lunch huh
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Distinguished Sage
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Message 4 of 4

Re: 21CN up to 20MB connection ADSL2+ Annex A or M ?

afraid not as edd says m is a trade off lower download for higher upload not really much to gain on most liens either when i checked my own line i would have gained less than 150k just not worth it unless you up load large files all the time
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