Well that certainly is a confusing junction.
Even just looking at codelook and google maps it doesn't quite add up.
PCP31 has a Huawei FTTC cabinet.
PCP1 has none. It only serves a couple of dozen properties, most of them at flats at Grove House, 12 Pulteney Road.
PCP31 is full with a waiters list in effect. The roadworks description suggests the PCP is being reshelled and not a new DSLAM fitted.
600mm x 300mm x 1000mm is the size of the new fancy PCP's.
If the numbers on streetview are correct then it's strange that they put the DSLAM for 31 beyond PCP1 like that.
My initial suspicion would be that they were numbered incorrectly, but I really don't have a clue here.
Roadworks shows ducting coming from the cabinet numbered 31 and lists the position of PCP31 as being right where it appears to be
Location:
(PCP31) ACROSS CARRIAGEWAY JUNCTION OF DARLINGTON STREET, BATHWICK HILL
Then the other works listed contradicts this.
Location:
(PCP31) SIDE OF 6, VANE STREET
Description:
Erect/Renew 1 PCP cabinet and base (600mm x 300mm x 1000mm),Install 1m of 2 poly ducts in Footway,Install 3m of 7 poly ducts in Footway,Install 5m of 4 poly ducts in Footway
The site of the reshell is where the PCP1 appears to be.
I'm none the wiser, but there's no ECI being replaced.