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===
===========================================================
+T.38 changes in 1.6.0.11, 1.6.1.2, 1.6.2.0:
+
+Beginning with each of these releases in their respective branches,
+Asterisk's internal methods of negotiating T.38 (FAX over IP) sessions
+changed in non-backwards-compatible ways. Any applications that previously
+used AST_CONTROL_T38 control frames will have to be upgraded to use
+AST_CONTROL_T38_PARAMETERS control frames instead; app_fax.c is a good
+example of how to generate and respond to these frames. These changes were
+made to solve significant T.38 interoperability problems between Asterisk
+and various SIP/T.38 endpoints identified by many users of Asterisk.
+
From 1.6.2 to 1.6.3:
* Asterisk-addons no longer exists as an independent package. Those modules