As kevinrduke says, normally the engineers are happy to accept setups similar to yours. But!
If your CAT6 is connected to T2/T5 of a bog standard NTE5A that will not pass an engineer install, as they will want to install the VDSL interstitial faceplate and your NTE5A will plug into that. The socket it will plug into is filtered so has no VDSL signal. The interstitial plate does however have unfiltered A/B terminals that your CAT6 could connect to and all will be fine.
If you have a filtered faceplate such as an earlier BT one or an Adsl Nation XTE-2005, with the CAT6 connected to the A/B terminals of that, then the VDSL interstitial faceplate is not required. However, it seems the new VDSL filter is slightly better than ADSLx filters. Bear that in mind as well wrt the previous paragraph, as whatever filter (if any) you have in the office will be an ADSLx one.
My broadband basic info/help site - www.robertos.me.uk
| Domains,site and mail hosting - Tsohost
Connection - Plusnet
UnLim Fibre (FTTC). Sync ~ 58.7/14.6Mbps @ 600m. - BQM
"Where talent is a dwarf, self-esteem is a giant."
- Jean-Antoine Petit-Senn.
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.