[ih] Question re rate of growth of the ArpanetYes, the ICCC demo site was connected to the ARPAnet via a 50kbps cable. Cheers, Alex On Monday, April 21, 2025 at 03:12:01 PM EDT, Jack Haverty via Internet-history <internet-history at elists.isoc.org> wrote: The ICCC conference in 1972 at the Washington Hilton was the "coming out party" for ARPANET. I was one of the crew setting up in the ballroom where live demos would be used by the public. I had never seen an IMP actually hooked up, so I volunteered to help the Telco guy when he arrived to get the "wideband circuit" in place - i.e., he had orders to "provision" the circuit. My expectations were to see some kind of massive cable, with robust military grade connectors, and the very professional "cable run" appropriate for a "wideband circuit". But what I actually saw was the tech using a spool of wire, which looked like it had been used many times before, and connecting its ends to screw terminals in a box on the wall, jus...

[Alexander McKenzie]

 Yes, the ICCC demo site was connected to the ARPAnet via a 50kbps cable.

Cheers,
Alex

On Monday, April 21, 2025 at 03:12:01 PM EDT, Jack Haverty via
Internet-history <internet-history at elists.isoc.org> wrote:


The ICCC conference in 1972 at the Washington Hilton was the "coming out
party" for ARPANET.  I was one of the crew setting up in the ballroom
where live demos would be used by the public.  I had never seen an IMP
actually hooked up, so I volunteered to help the Telco guy when he
arrived to get the "wideband circuit" in place - i.e., he had orders to
"provision" the circuit.

My expectations were to see some kind of massive cable, with robust
military grade connectors, and the very professional "cable run"
appropriate for a "wideband circuit".  But what I actually saw was the
tech using a spool of wire, which looked like it had been used many
times before, and connecting its ends to screw terminals in a box on the
wall, just like you would then hook up a regular phone line.   IIRC
there was only a single circuit to the IMP (actually it was a TIP).

That makes me wonder now if the ICCC'72 demo actually used a 50-kb
circuit.  Was it possible to get "12 bonded channels" somehow over a
single twisted pair?

Jack