Siemens Telephone Systems Refurbished
The iSDX has been a market leading PABX since its introduction in the early eighties, and continues to provide voice communications to many thousands of users, badged as the original Plessey iSDX, British Telecoms Merlin DX 300 and 3000, or Telephone Rentals Telematic DX or TDX300 and TDX3000. The product range later evolved into the Siemens Realitis, or more lately the Siemens HiPath Communications Server