The "80" represented the 1980s decade which was quickly approaching while Wescom was developing its first commercial digital PBX during the 1975 to 1980 time period.
The first product in the family was the 3072 timeslot 580L-PBX which had a set of six Intel 8080 microprocessor pairs, for handling individual tasks in its control complex (State, Database, Console, Register, Trunk and Line micro complexes(CPU, memory, IPBs).
By 1980, the 580 PBX and ACD development effort had effectively bankrupted Wescom with many vendors having placed the company on credit hold.
Rockwell's interest in the 580 product line centered on its 100% non-blocking network frame that connected the voice paths within the system.
The last of the 580 product line was probably sold in the early to mid 1990s by Ditran's successor Digital Transmission Inc. who developed additional hardware and software to utilize the ACD platform for public-safety answering points for enhanced 9-1-1 service.