The UNIGATE EL series is based on the protocol converters UNIGATE CL. It has an additional Ethernet interface.
Change or Device Replacement
UNIGATE® EL may be replaced by UNIGATE® CX-FE-FB2 or UNIGATE® CX-ModTCP-FB2. All hereto needed information is to be found here: Changing or Replacing UNIGATE® EL by UNIGATE® CX.