Post #2318544
2026-04-24 14:06 UTC
@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?
Replies (1)
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@vfrmedia@social.tchncs.de 2026-04-24 14:15
@lpbkdotnet@mstdn.social I've seen more pictures of ringers with mains motors than DC (and vaguely remember the ones I saw during work experience at British Telecom in 1980s being mains, and these were in large Telephone Exchanges) so I suspect that is how it was set up (as most places had fairly reliable mains electricity by 1970s, other than the power cuts which occured during industrial action)