[Asterisk-Users] How to prevent a call from going to voicemail when one phone is offline?

[Remco Barende]

Hi list!

I have a setup at home where one incoming line will ring several 
extensions (nothing out of the ordinary).

I noticed however that if the dial plan includes one phone that is off 
line (power adapter yanked out or no network connection) the phone will 
only ring for a split second and switch to voicemail immediately.

I don't want this. If I ring 4 phones and one is unreachable I would still 
like * to wait till the timout and keep ringing the other phones.

How can I do this?

Thanks!!