Pddco: Nice idea! I'd long since forgotten that the Journels were available. I did have a couple that took me right back to Strowger days but I fear they have been disposed of by the powers that be!
iniltous: I believe the pdfs you included above have pretty much answered my question diagramatically, ie its a (presumably new) Line Access Gateway that does the functions that I was quering. So thanks.
