Anyone have a cache of NEC NA4-09 crossbar PABX manuals? I have two but neither one contains the SD for this tie trunk, which is a #201364, loop supervision. Both manuals contain only the #201365 which is E&M and quite different. I want to put this into use in a museum display.
Thanks.
Last edited by StephK; 03/23/17 06:08 PM.
