Register 71323

The Plessey TXE2 at Avoncroft has several registers, each  register is made up of 4 units ( also called cards or Plug In Units) , taking up 6 slots. the one shown here is register 5

The register is required to set up a call and remains busy connecting the call until the caller has dialled the local number, because it holds both the caller line id and the called number. The TXE2 is NOT a step by step system like Strowger.