X.21

X.21 interface is a synchronous interface using RS422 logic levels. It is used to accurate control drop out relays and many other specialised equipment. It normally uses TX data, RX data and a Clock signal to sync the data. Our interfaces support the complete signal interface in DTE and DCE configuration. presently we can accommodate data speeds from 19200b/s to 2.4 Mb/s. They come in Stand alone configuration. We also have modules that fit into our muxes with baud rates up to 64kb/s. see the muxes below.

LL2100 - X.21V11 Single Channel 19.2kbps up to 2048kbps Fibre interface.