Only >5Mbps ADSL qualifies as Broadband by ISPA definition.
Let me explain why 5Mbps - ISPA Guidelines state:
Telkom's ADSL conditions state that Telkom are legal up to a 1:20 contention ratio.
http://www.telkom.co.za/products_services/dsl/conditions.html
Using simple maths, you need 5Mbps ADSL with a 1:20 to give a minimum download speed of 256Kbps.
As you can see:
It's not an ISP issue, it's a Telkom issue.
During "prime time" the contention
will reach 1:20 and you
will only get 0.2Mbps which is below the ISPA/DoC/ITU minimum requirement of 256Kbps.
This happens to lots of ADSL users where during "Prime Time" the speed drops to below 256Kbps due to 1:20 rule - just check these forums.
PS. The 1Mbps, 384Kbps 1:20 simple calculation is left to the reader.
@Ant_Brooks, What is the ISPA going to do to prevent this blatantly false advertising?