As far as I know it still doesn’t work - I would like to try it again with Asterisk 13, but we use a Broadsoft SIP trunking provider and we are getting audio dropouts on their trunks using 13 and Chan-SIP and I have been unable to get Chan-PJSIP working with my trunks - works fine with the phones.
It’s weird because it seems so obvious that it should work, but whatever the magic combo is, I can’t find it.