From 1.6.1.1 to 1.6.1.2:
-Beginning with this release, 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.
+* Beginning with this release, 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 1.6.0.1 to 1.6.1: