Wonder how many people will remember the Simi Valley based Micom Communications Corporation that was very active in the early days of Voice over Data (pre VOIP)? Their Marathon product was light years ahead of the market (this whilst many of their competitors were still messing around with analogue Muxs).
With their Integrated Voice and Data solution they were able to come up with an amazing technology that was so good, that 7 years after I installed a Marathon Network, could not impliment a comparable Cisco solution because their voice quality was so poor and unreliable!
Sadly Micom was bought out by Nortel who then proceeded to implode in a spectacular fashion! A Great Product ... well ahead of its time, but now simply a forgotten part of Data Communications history!