When is a Splitter not a Splitter?

When it’s one sold by dabs.com. Dabs generally have some of the cheapest ADSL hardware around and have sold lots of PCI and Amigo Ethernet modems. But it seems they’ve got caught out with the
micro-filters they sell.

Externally they are identical to the ones sold by Solwise but internally they are very different. These differences are resulting in faults
such as telephones plugged not ringing, a fairly basic requirement for a telephone network device. The question is – are all Dabs filters like this or is it a small subset of the batchs?

Steve from Solwise has posted some comments about the Dabs filters in the forums here. His comments detail the various
changes that had to be made to the original filters they purchased and now resell to meet the SIN346 specification – it appears that perhaps Dabs have purchased the filters in good faith and done
very little testing/inspection of them.