How long does it typically take for a voicemail or answering machine/service to pick up? And what percentage of your long ring-time countries (e.g., Libya) hav

How long does it typically take for a voicemail or answering machine/service to pick up? And what percentage of your long ring-time countries (e.g., Libya) have such a service? Given that only 5% of calls go unanswered in Libya after ringing for so long, I think that's a huge confound that affects our behavior.