Post #2318543
2026-04-24 13:38 UTC
@vfrmedia@social.tchncs.de there were some larger ringers that were mains driven, and they could look identical to their DC equivalents
PMBX/PABXs would sometimes have one of each, so if there was a mains failure it would cut over to the DC ringer
The 2A is the "baby" ringer though, and was installed in UAXs which were unattended, sometimes in remote areas, and run primarily from battery (float charged from the grid)
They're the most practical to own as you can lift them relatively easily!
Replies (1)
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@lpbkdotnet@mstdn.social 2026-04-24 14:06
@vfrmedia@social.tchncs.de Thinking about it, I'm not sure what the practice was in director/non-director "main" exchanges It would seem plausible that they would prefer a mains ringer to take a considerable load off the batteries. I assume they would also have a DC standby ringer to cover until the generator kicked in as well?