Uhh...theres a 48V battery bank, usually in a battery room, sometimes containing hundreds of batteries, as what amounts to a UPS. Not exactly the same thing. ;) There is so much energy stored in those rooms that there are rules for tool tethering, etc. Every so often you'll see an area of a wall or rack that has a thin metal plating on it, the remains of a wrench that got dropped and was immediately vaporized. A 5ESS, even a small installation, is a many-hundreds-of-amps proposition. -Dave On November 4, 2024 2:59:37 PM Ethan O'Toole via vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> wrote:
I don't think they use that much power, I seem to recall telcos run them on batteries or something.
On Wed, 30 Oct 2024, Martin A. Flynn via vcf-midatlantic wrote:
Ethan,
Even the VCDX variant has some pretty intense power and cooling requirements
If it's headed to InfoAge, that needs to cleared with Management / Wall Township, and space dedicated for the switch and support hardware
Martin
On 10/30/2024 12:28 PM, Ethan O'Toole via vcf-midatlantic wrote:
Not to change the subject, but I've heard that Verizon is retiring all of their 5ESS hardware.
Anyone have any contacts at Verizon regarding surplus equipment / scrap?
I think it would be cool to try to build a running 5ESS VCDX system with a minimum amount of POTS circuits (64?) and trunks and all that. Compact -48v DC power supplies, Sun 1u for the emulator thing... A home sized build that can be connected to shadytel or one of the online hobbyist phone networks.
Also, I don't really know that much about them. I've been reading some of the manuals that Nokia (who bought Alcatel who bought Lucent who was AT&T or whatever) has online. The facebook Class 5 group -- someone said the switch mdoule itself will take nearly a full rack, so that is interesting. Wikipedia said 3 racks. The place I worked that I think had one, it was 11 or 12racks but I never saw inside them -- no one seemed to know anything about it.
Any leads appreciated.
- Ethan
-- Dave McGuire, AK4HZ New Kensington, PA