UPGRADE.txt

===========================================================
===
=== Information for upgrading between Asterisk versions
===
=== These files document all the changes that MUST be taken
=== into account when upgrading between the Asterisk
=== versions listed below. These changes may require that
=== you modify your configuration files, dialplan or (in
=== some cases) source code if you have your own Asterisk
=== modules or patches. These files also include advance
=== notice of any functionality that has been marked as
=== 'deprecated' and may be removed in a future release,
=== along with the suggested replacement functionality.
===
=== UPGRADE-1.2.txt -- Upgrade info for 1.0 to 1.2
=== UPGRADE-1.4.txt -- Upgrade info for 1.2 to 1.4
=== UPGRADE-1.6.txt -- Upgrade info for 1.4 to 1.6
=== UPGRADE-1.8.txt -- Upgrade info for 1.6 to 1.8
=== UPGRADE-10.txt  -- Upgrade info for 1.8 to 10
=== UPGRADE-11.txt  -- Upgrade info for 10 to 11
=== UPGRADE-12.txt  -- Upgrade info for 11 to 12
=== UPGRADE-13.txt  -- Upgrade info for 12 to 13
=== UPGRADE-14.txt  -- Upgrade info for 13 to 14
=== UPGRADE-15.txt  -- Upgrade info for 14 to 15
=== UPGRADE-16.txt  -- Upgrade info for 15 to 16
===========================================================

New in 17.0.0:

chan_sip:
 - The chan_sip module is now deprecated, users should migrate to the
   replacement module chan_pjsip.  See guides at the Asterisk Wiki:
     https://wiki.asterisk.org/wiki/x/tAHOAQ
     https://wiki.asterisk.org/wiki/x/hYCLAQ

func_callerid:
 - The CALLERPRES() dialplan function, deprecated in Asterisk 1.8, has been
   removed.

res_parking:
 - The PARKINGSLOT channel variable, deprecated in Asterisk 12 in favor of the
   PARKING_SPACE channel variable, will no longer be set.

res_xmpp:
 - The JabberStatus application, deprecated in Asterisk 12, has been removed.