Thanks for the explanation. I am indeed interested in finding out what would be involved / required / expected in order to help keep Asterisk as a package in a future release of Debian Stable - and in the meantime, to ensure that it remains available in Backports.
I have asked on the Asterisk community list / forum to find out whether anyone else would be willing to join in, but I think the starting point for anyone agreeing to this needs to be - what would you want someone to do, if they have the time and interest to help in keeping Asterisk in Debian? Thanks, Antony. -- "The future is already here. It's just not evenly distributed yet." - William Gibson