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How to use Annex M to increase upload speeds

Balancing downloadS vs uploads for faster web

QUESTION In a recent story you said Annex M could increase ADSL 2+ broadband upload speeds at the expense of download speeds. I use Slingbox to stream UK TV programmes to my daughter who lives in France, but my average upload speed of 0.37 megabits per second (Mbps) is inadequate for streaming fast-moving action, such as football. I'd be happy to sacrifice some of my 6Mbps download speed to improve quality at her end. How can I do this? Douglas Low

HELPROOM ANSWER The technology that enables this is initiated at the local exchange, and not all exchanges are Annex M-capable yet. You will need to contact BT and ask whether it offers this service in your area. Note, however, that BT currently charges ISPs £7 for this service; the cost to users is likely to be higher.

BT sees this service as primarily of interest to business users who require better VoIP, video-conferencing and virtual private network access. It sounds ideal for your needs, but BT has yet to confirm whether it will offer the service to home users.

Broadband Advisor

See also: How to fix everything: the ultimate guide to fixing technology

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