Well, it doesn't work. Fix pending discussion on JIRA for asterisk, just figured I'd log it here so long. Reproducible: Always
Created attachment 321350 [details, diff] dahdi-analog-ringing.patch They're still debating whether or not to reduce this value to two, or possibly even one. In the meantime I request we merge this patch so long as this really is a show stopper if your ringing cadences isn't sufficient to trigger ringing. Since no-one else reported this I suspect it may only be me that need this, and the value of three works for me.
+*dahdi-2.6.1-r1 (20 Aug 2012) + + 20 Aug 2012; Tony Vroon <chainsaw@gentoo.org> +dahdi-2.6.1-r1.ebuild: + Fix by Jaco Kroon to wctdm24xxp to ensure ringing is detected early & + reliably on South African analog lines. This was a regression in 2.6.1 where + North American-centric timings/values were used. Closes bug #431294.