My exchange has been upgraded to 21CN and Zen have contacted me to offer the chance to upgrade to "up to 16Mbps". The caveat in the email is that such an upgrade may result in a connection that is less stable, depending on the line (apart from stating that the speeds may not improve significantly).
Before the upgrade my router (BiPAC 7800N) was reporting the following line stats:
SNR Margin(Upstream) 22.0
SNR Margin(Downstream) 3.7
Line Attenuation(Upstream) 20.0
Line Attenuation(Downstream) 42.0
Post 21CN upgrade, the stats are as follows:
SNR Margin(Upstream) 23.0
SNR Margin(Downstream) 3.5
Line Attenuation(Upstream) 19.0
Line Attenuation(Downstream) 35.0
So the question is, should I opt for the upgrade?