Duke’s Meats, now defunct had an ULster telephone exchange name on its sign whenever this image was captured in the 1980s. Via 80s.nyc.

ULster Telephone Exchange, via 80s.nyc

ULster Telephone Exchange, via 80s.nyc

The last ULster exchange name I saw in the wilds was in Gowanus back in June:

ULster Exchange Name, Gowanus

ULster Exchange Name, Gowanus