Business Grade Symmetric ADSL2+
What is ADSL2 +?
ITU G.992.5 is an ITU (International Telecommunication Union) standard, also referred to as ADSL2+ or ADSL2Plus. It doubles the number of downstream bits per second. The data rates can be as high as 24 Mbps downstream and 1 Mbps upstream depending on the distance from the exchange. It was this service that we dismissed as not suitable for businesses 2 years back. However, technology & recent developments have caused us to revise our opinions.
Reasons to choose ADSL2+
| • | Faster. ADSL2+ ANNEX A is “beefed up” Asymmetric DSL over copper at greater distances but ANNEX M is “beefed up” Symmetric Speeds over copper at greater distances. Annex M increases upload speeds by shifting upstream/downstream frequency split from 138kHz up to 276kHz, allowing upstream bandwidth to be increased from 1 Mbps to 2 Mbps.
The Full Throttle speed for Annex A services is 24Mbps/1 Mbps, subject to the distance form the exchange & exchange availability. The Full Throttle speed for Annex M services is 2048kbps /2048kbps |
| • | Further. Coverage is approximately 90% of the metropolitan areas of Sydney, Brisbane, Melbourne and Perth |
| • | Funkier. Our partnerships with leading providers ensure that Annex M ADSL2+ has all the advantages of existing business grade broadband, Low contention ratio, Quality of Service, Low latency |
Facts to be aware of before choosing ADSL2+
Make sure you get a business grade service. We have seen that heavy users opt for this service which means that oversubscribed services tend to attract more than their fair share of traffic. Not much good travelling on a freeway if the traffic is bumper to bumper!
Asymmetric services are not the best product for businesses that are producers of data, rather than consumers of data. They need more upstream bandwidth to deliver inter-branch traffic, e-mail and other hosted services. In this case, an asymmetrical product, however high the downstream speed, doesn’t address the real bottle-neck. And as we’ve said before, for real-time protocols like voice and video you really need low end-to-end latency rather than a large headline bandwidth number.