Tandata's early efforts into home computing comms were this 'communications package' of 3 devices - 1200/75 manual modem, autodial/autoanswer unit and RS232 interface. Their selling point back in the day was that they stacked together which kept the cabling to a minimum. They were finished in nice QL-style cases too.

This one is just the manual modem and came from one of my many car boot sales around the turn of the century. It's never been used.