====== SIP Router - New features in 4.0.x version ======

The page collects the summary (draft notes) of the new features in SIP Express Router (SER) and Kamailio (OpenSER) development version.

**This source tree branch will result in release 4.0.0 - release date proposal: Q1 2013**.

Current stable branch is: **3.3**


===== New SIP Router modules =====

===== New in Old SIP Router modules =====

==== pv ====
  * New PV's:
    * **$Mf(idx), $Bf(idx), $Sf(idx)** - Direct access to individual transaction, branch and script flags.

==== rtpproxy ====
  * New options to rtpproxy_manage(), rtpproxy_offer(), rtpproxy)_answer():
     * **b** - add the contents of a PV to the callid. Can be used to create per-branch rtpproxy sessions.

==== tm ====
  * Add option to check if callid of reply matches the callid of the request. If the test fails, the reply will not be matched to the transaction.
  * Remember per branch onreply_route and onfailure_route settings. Each branch can now have its own reply and failure route.

==== tmx ====

  * New PV's:
     * ** $T_reply_reason** - Provide the reason phrase for the current or winning reply in the transaction, just like $T_reply_code does for the code
     *  **$T_reply_last** - Provide the reply code for the previous (stored) reply in the transaction.
  * New statistics: **active_transactions** - Number of transaction still waiting for a reply.
===== New in Core =====

==== Preprocessor directives ====

==== Parameters ====

=== version_table ===

Set the name of the table holding the version of the table structures used by modules. Default value is "version".

===== New in Documentation =====

==== Developer visible changes ====

  * Many bugfixes to existing doxygen code documentation in modules and core
  * Several extensions to doxygen documentation in modules and core