No problem, I've deleted the duplicate.
I hadn't realized that crossbar switching was used so widely in Ireland. I'd always assumed that SxS would have been the mainstay of Irish telephone exchanges, as it was in Britain. A wrong assumption of my part, as Eire was independent by the time automatic switching was widely installed.
Unlike the U.S. and some other countries, Xbar never really caught on in a big way in the U.K. There were a few local exchanges that adopted it, often as trials, but it was largely confined to large tandems. In many areas the local central offices went straight from SxS to TXE (Electronic), or even from SxS to System X (digital).
Do you know when Irish STD was introduced?
