What one point installation.. as in data point conversion or wiring inclusive as in trunking.
There is this Ayub, at hp 81186069 as mentioned in the >
Internet Bandwidth & Networking Clinic
Some ISP do have contractor to handle network data points works.
For me i used ISP Starhub contractor to do the data points conversion & trunking inclusive of data points at both end.
Charges varies according to the work done which trunking usually from $80 ~ $150 per connection which may include ethernet cables & data points.
Data point conversion on telephone point to data point is $25 + gst in my case on Starhub contractor.
Best to negotiate prior work start.