Most changes in Enswitch 3.5 purely add functionality, but some change or remove functionality. Here is a list of such changes. If any of these adversely affect you, please contact support as soon as possible.

• Taxes for numbers are now controlled separately from other PBX features. The Enswitch upgrade should migrate this data correctly, but it is suggested to review each tax after upgrading to verify that it is set correctly for numbers.
• The monthly fees now use the Enswitch trace log, rather than logging to STDOUT.
• Passing calls through feature codes now sets/updates the 'Diversion' SIP header and the called number sent to telephones that have the 'Send called number as request URI' option enabled.
• The hangup URL specified by the "Ask web URL" feature is now only invoked for the invoking call leg, not child legs.
• As always, some SOAP API functions have changed. Please see /opt/enswitch/current/doc/api_changes.txt for a list.