Yep, I worked that out . But thanks.
The diagram on the inside of the door showed the port numbering. I must have missed something though.
There are two banks of 6 sets of five rows with five connections each. That's 300 ports. But the highest number is 287.
Ahhh.... Is it the last port on the last of each set that is left spare, (or otherwise allocated)? I couldn't work out where the missing 12 were!
There were a few tied up unused bundles, but the top three sets of Block 2 were wired. ie Ports 5-9, 15-19 and so on.
That perhaps ties in with 3 cards in the DSLAM as mentioned elsewhere a bit ago? Ah but! there must have been more wires to connect, as with I believe a maximum of 6 cards per DSLAM that means two sets of 5 rows.
Looked a darn site neater than the insides of the PSTN cab. What a job wiring it though - the temperature in the sun never went above zero today, and the cab was in the shade from around midday. Poor sods. The cabinet up the road was clearly being done at the same time.