blubparadox
What did early Erlang telecom look like?
We’ve all heard that Erlang was created for working with telecom switches, but I haven’t seen a discussion go any deeper. The original telecom switches, how did they communicate with each other? Was it some form of TCP, or a different protocol? Serial? Something proprietary?
I’d like to see how Erlang did its early communication, it would be interesting to study and possibly help me with my current project.
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al2o3cr
Here’s a short writeup about an early Erlang system (1999), the AXD 301:
Protocol-wise, these used technologies like ATM and frame-relay that are lower-level than IP. The article even calls out IP switching over ATM as a work-in-progress.
sbuttgereit
Of course, for a more visceral take on it…
along with discussion here… Erlang The Movie
OK… I post this a bit tongue-in-cheek, but I do think it’s relevant to the question.
Oh dear… I feel old. At the time this document was published I was managing a small data center and network for a chain of retail stores… I spent many a night logged into the Cisco routers at the core of our Frame Relay based WAN watching cross network latencies and watching LMI metrics with our telecom provider… and yes, we were at least contemplating if our next steps network-wise might include IP over ATM. I would say simpler times, but in this case I’m not so sure that the were 
.
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