asterisk/UPGRADE.txt

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===
=== 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
===
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AgentMonitorOutgoing
 - Application removed.  It was a holdover from when AgentCallbackLogin was
   removed.

NoCDR:
 - This application is deprecated. Please use the CDR_PROP function instead.

ResetCDR:
 - The 'w' and 'a' options have been removed. Dispatching CDRs to registered
   backends occurs on an as-needed basis in order to preserve linkedid
   propagation and other needed behavior.
 - The 'e' option is deprecated. Please use the CDR_PROP function to enable
   CDRs on a channel that they were previously disabled on.
 - The ResetCDR application is no longer a part of core Asterisk, and instead
   is now delivered as part of app_cdr.

ForkCDR:
 - ForkCDR no longer automatically resets the forked CDR. See the 'r' option
   for more information.
 - Variables are no longer purged from the original CDR. See the 'v' option for
   more information.
 - The 'A' option has been removed. The Answer time on a CDR is never updated
   once set.
 - The 'd' option has been removed. The disposition on a CDR is a function of
   the state of the channel and cannot be altered.
 - The 'D' option has been removed. Who the Party B is on a CDR is a function
   of the state of the respective channels, and cannot be altered.
 - The 'r' option has been changed. Previously, ForkCDR always reset the CDR
   such that the start time and, if applicable, the answer time was updated.
   Now, by default, ForkCDR simply forks the CDR, maintaining any times. The
   'r' option now triggers the Reset, setting the start time (and answer time
   if applicable) to the current time.
 - The 's' option has been removed. A variable can be set on the original CDR
   if desired using the CDR function, and removed from a forked CDR using the
   same function.
 - The 'T' option has been removed. The concept of DONT_TOUCH and LOCKED no
   longer applies in the CDR engine.
 - The 'v' option now prevents the copy of the variables from the original CDR
   to the forked CDR. Previously the variables were always copied but were
   removed from the original. Removing variables from a CDR can have unintended
   side effects - this option allows the user to prevent propagation of
   variables from the original to the forked without modifying the original.

AMI:
 - The SIP SIPqualifypeer action now sends a response indicating it will qualify
   a peer once a peer has been found to qualify.  Once the qualify has been
   completed it will now issue a SIPqualifypeerdone event.
 - Version 1.4 - The details of what happens to a channel when a masquerade
   happens (transfers, parking, etc) have changed.
   - The Masquerade event now includes the Uniqueid's of the clone and original
     channels.
   - Channels no longer swap Uniqueid's as a result of the masquerade.
   - Instead of a shell game of renames, there's now a single rename, appending
     <ZOMBIE> to the name of the original channel.
 - The AMI events 'ParkedCall', 'ParkedCallTimeOut', 'ParkedCallGiveUp', and
   'UnParkedCall' have changed significantly in the new res_parking module.
   - The 'Channel' and 'From' headers are gone. For the channel that was parked
     or is coming out of parking, a 'Parkee' channel snapshot is issued and it
     has a number of fields associated with it. The old 'Channel' header relayed
     the same data as the new 'ParkeeChannel' header.
   - The 'From' field was ambiguous and changed meaning depending on the event.
     for most of these, it was the name of the channel that parked the call
     (the 'Parker'). There is no longer a header that provides this channel name,
     however the 'ParkerDialString' will contain a dialstring to redial the
     device that parked the call.
   - On UnParkedCall events, the 'From' header would instead represent the
     channel responsible for retrieving the parkee. It receives a channel
     snapshot labeled 'Retriever'. The 'from' field is is replaced with
     'RetrieverChannel'.
   - Lastly, the 'Exten' field has been replaced with 'ParkingSpace'.

CEL:
 - The Uniqueid field for a channel is now a stable identifier, and will not
   change due to transfers, parking, etc.

Build System:
 - Asterisk now optionally uses libxslt to improve XML documentation generation
   and maintainability. If libxslt is not available on the system, some XML
   documentation will be incomplete.

Core:
 - The following channel variables have changed behavior which is described in
   the CHANGES file: TRANSFER_CONTEXT, BRIDGEPEER, BRIDGEPVTCALLID,
   ATTENDED_TRANSFER_COMPLETE_SOUND, DYNAMIC_FEATURENAME, and DYNAMIC_PEERNAME.

Queues:
 - Queue logging for PAUSEALL/UNPAUSEALL now only occurs if the interface this is
   performed on is a member of at least one queue.
 - Queue strategy rrmemory now has a predictable order similar to strategy
   rrordered. Members will be called in the order that they are added to the
   queue.
 - CDR behavior in app_queue has been modified slightly.  The CDR record will
   now only record a disposition of BUSY if all Queue members were actually
   busy on a call or some Queue members were busy or paused.  Previously, any
   Queue member being paused would result in a disposition of BUSY.
 - Removed the queues.conf check_state_unknown option.  It is no longer
   necessary.
 - It is now possible to play the Queue prompts to the first user waiting in a
   call queue. Note that this may impact the ability for agents to talk with
   users, as a prompt may still be playing when an agent connects to the user.
   This ability is disabled by default but can be enabled on an individual
   queue using the 'announce-to-first-user' option.

Dial:
 - Now recognizes 'W' to pause sending DTMF for one second in addition to
   the previously existing 'w' that paused sending DTMF for half a second.

ExternalIVR:
 - Now recognizes 'W' to pause sending DTMF for one second in addition to
   the previously existing 'w' that paused sending DTMF for half a second.

SendDTMF:
 - Now recognizes 'W' to pause sending DTMF for one second in addition to
   the previously existing 'w' that paused sending DTMF for half a second.

SetAMAFlags
 - This application is deprecated in favor of the CHANNEL function.

chan_agent:
 - The updatecdr option has been removed. Altering the names of channels on a
   CDR is not supported - the name of the channel is the name of the channel,
   and pretending otherwise helps no one.
 - The AGENTUPDATECDR channel variable has also been removed, for the same
   reason as the updatecdr option.
 - chan_agent is removed and replaced with AgentLogin and AgentRequest dialplan
   applications.  Agents are connected with callers using the new AgentRequest
   dialplan application.  The Agents:<agent-id> device state is available to
   monitor the status of an agent.  See agents.conf.sample for valid
   configuration options.

chan_bridge
 - chan_bridge is removed and its functionality is incorporated into ConfBridge
   itself.

chan_dahdi:
 - Analog port dialing and deferred DTMF dialing for PRI now distinguishes
   between 'w' and 'W'.  The 'w' pauses dialing for half a second.  The 'W'
   pauses dialing for one second.
 - The default for inband_on_proceeding has changed to no.

chan_local:
 - The /b option has been removed.

Dialplan:
 - All channel and global variable names are evaluated in a case-sensitive manner.
   In previous versions of Asterisk, variables created and evaluated in the
   dialplan were evaluated case-insensitively, but built-in variables and variable
   evaluation done internally within Asterisk was done case-sensitively.
 - Asterisk has always had code to ignore dash '-' characters that are not
   part of a character set in the dialplan extensions.  The code now
   consistently ignores these characters when matching dialplan extensions.
 - BRIDGE_FEATURES channel variable is now casesensitive for feature letter codes.
   Uppercase variants apply them to the calling party while lowercase variants
   apply them to the called party.

Features:
 - The features.conf [applicationmap] <FeatureName>  ActivatedBy option is
   no longer honored.  The feature is always activated by the channel that has
   DYNAMIC_FEATURES defined on it when it enters the bridge.  Use predial to set
   different values of DYNAMIC_FEATURES on the channels

 - Executing a dynamic feature on the bridge peer in a multi-party bridge will
   execute it on all peers of the activating channel.

 - There is no longer an explicit 'features reload' CLI command. Features can still be
   reloaded using 'module reload features'.


Parking:
 - The arguments for the Park, ParkedCall, and ParkAndAnnounce applications have
   been modified significantly. See the application documents for specific details.
   Also parking lot configuration is now done in res_parking.conf instead of
   features.conf

From 10 to 11:

Voicemail:
 - All voicemails now have a "msg_id" which uniquely identifies a message. For
   users of filesystem and IMAP storage of voicemail, this should be transparent.
   For users of ODBC, you will need to add a "msg_id" column to your voice mail
   messages table. This should be a string capable of holding at least 32 characters.
   All messages created in old Asterisk installations will have a msg_id added to
   them when required. This operation should be transparent as well.

Parking:
 - The comebacktoorigin setting must now be set per parking lot. The setting in
   the general section will not be applied automatically to each parking lot.
 - The BLINDTRANSFER channel variable is deleted from a channel when it is
   bridged to prevent subtle bugs in the parking feature.  The channel
   variable is used by Asterisk internally for the Park application to work
   properly.  If you were using it for your own purposes, copy it to your
   own channel variable before the channel is bridged.

res_ais:
 - Users of res_ais in versions of Asterisk prior to Asterisk 11 must change
   to use the res_corosync module, instead.  OpenAIS is deprecated, but
   Corosync is still actively developed and maintained.  Corosync came out of
   the OpenAIS project.

Dialplan Functions:
 - MAILBOX_EXISTS has been deprecated. Use VM_INFO with the 'exists' parameter
   instead.
 - Macro has been deprecated in favor of GoSub.  For redirecting and connected
   line purposes use the following variables instead of their macro equivalents:
   REDIRECTING_SEND_SUB, REDIRECTING_SEND_SUB_ARGS,
   CONNECTED_LINE_SEND_SUB, CONNECTED_LINE_SEND_SUB_ARGS.
 - The REDIRECTING function now supports the redirecting original party id
   and reason.
 - The HANGUPCAUSE and HANGUPCAUSE_KEYS functions have been introduced to
   provide a replacement for the SIP_CAUSE hash. The HangupCauseClear
   application has also been introduced to remove this data from the channel
   when necessary.


func_enum:
 - ENUM query functions now return a count of -1 on lookup error to
   differentiate between a failed query and a successful query with 0 results
   matching the specified type.

CDR:
 - cdr_adaptive_odbc now supports specifying a schema so that Asterisk can
   connect to databases that use schemas.

Configuration Files:
 - Files listed below have been updated to be more consistent with how Asterisk
   parses configuration files.  This makes configuration files more consistent
   with what is expected across modules.

   - cdr.conf: [general] and [csv] sections
   - dnsmgr.conf
   - dsp.conf

 - The 'verbose' setting in logger.conf now takes an optional argument,
   specifying the verbosity level for each logging destination.  The default,
   if not otherwise specified, is a verbosity of 3.

AMI:
  - DBDelTree now correctly returns an error when 0 rows are deleted just as
    the DBDel action does.
  - The IAX2 PeerStatus event now sends a 'Port' header.  In Asterisk 10, this was
    erroneously being sent as a 'Post' header.

CCSS:
 - Macro is deprecated. Use cc_callback_sub instead of cc_callback_macro
   in channel configurations.

app_meetme:
  - The 'c' option (announce user count) will now work even if the 'q' (quiet)
    option is enabled.

app_followme:
 - Answered outgoing calls no longer get cut off when the next step is started.
   You now have until the last step times out to decide if you want to accept
   the call or not before being disconnected.

chan_gtalk:
 - chan_gtalk has been deprecated in favor of the chan_motif channel driver. It is recommended
   that users switch to using it as it is a core supported module.

chan_jingle:
 - chan_jingle has been deprecated in favor of the chan_motif channel driver. It is recommended
   that users switch to using it as it is a core supported module.

SIP
===
 - A new option "tonezone" for setting default tonezone for the channel driver
   or individual devices
 - A new manager event, "SessionTimeout" has been added and is triggered when
   a call is terminated due to RTP stream inactivity or SIP session timer
   expiration.
 - SIP_CAUSE is now deprecated.  It has been modified to use the same
   mechanism as the HANGUPCAUSE function.  Behavior should not change, but
   performance should be vastly improved.  The HANGUPCAUSE function should now
   be used instead of SIP_CAUSE. Because of this, the storesipcause option in
   sip.conf is also deprecated.
 - The sip paramater for Originating Line Information (oli, isup-oli, and
   ss7-oli) is now parsed out of the From header and copied into the channel's
   ANI2 information field.  This is readable from the CALLERID(ani2) dialplan
   function.
 - ICE support has been added and is enabled by default. Some endpoints may have
   problems with the ICE candidates within the SDP. If this is the case ICE support
   can be disabled globally or on a per-endpoint basis using the icesupport
   configuration option. Symptoms of this include one way media or no media flow.

chan_unistim
 - Due to massive update in chan_unistim phone keys functions and on-screen
   information changed.

users.conf:
 - A defined user with hasvoicemail=yes now finally uses a Gosub to stdexten
   as documented in extensions.conf.sample since v1.6.0 instead of a Macro as
   documented in v1.4.  Set the asterisk.conf stdexten=macro parameter to
   invoke the stdexten the old way.

res_jabber
 - This module has been deprecated in favor of the res_xmpp module. The res_xmpp
   module is backwards compatible with the res_jabber configuration file, dialplan
   functions, and AMI actions. The old CLI commands can also be made available using
   the res_clialiases template for Asterisk 11.

From 1.8 to 10:

cel_pgsql:
 - This module now expects an 'extra' column in the database for data added
   using the CELGenUserEvent() application.

ConfBridge
 - ConfBridge's dialplan arguments have changed and are not
   backwards compatible.

File Interpreters
 - The format interpreter formats/format_sln16.c for the file extension
   '.sln16' has been removed. The '.sln16' file interpreter now exists
   in the formats/format_sln.c module along with new support for sln12,
   sln24, sln32, sln44, sln48, sln96, and sln192 file extensions.

HTTP:
 - A bindaddr must be specified in order for the HTTP server
   to run. Previous versions would default to 0.0.0.0 if no
   bindaddr was specified.

Gtalk:
 - The default value for 'context' and 'parkinglots' in gtalk.conf has
   been changed to 'default', previously they were empty.

chan_dahdi:
 - The mohinterpret=passthrough setting is deprecated in favor of
   moh_signaling=notify.

pbx_lua:
 - Execution no longer continues after applications that do dialplan jumps
   (such as app.goto).  Now when an application such as app.goto() is called,
   control is returned back to the pbx engine and the current extension
   function stops executing.
 - the autoservice now defaults to being on by default
 - autoservice_start() and autoservice_start() no longer return a value.

Queue:
 - Mark QUEUE_MEMBER_PENALTY Deprecated it never worked for realtime members
 - QUEUE_MEMBER is now R/W supporting setting paused, ignorebusy and penalty.

Asterisk Database:
 - The internal Asterisk database has been switched from Berkeley DB 1.86 to
   SQLite 3. An existing Berkeley astdb file can be converted with the astdb2sqlite3
   utility in the UTILS section of menuselect. If an existing astdb is found and no
   astdb.sqlite3 exists, astdb2sqlite3 will be compiled automatically. Asterisk will
   convert an existing astdb to the SQLite3 version automatically at runtime. If
   moving back from Asterisk 10 to Asterisk 1.8, the astdb2bdb utility can be used
   to create a Berkeley DB copy of the SQLite3 astdb that Asterisk 10 uses.

Manager:
 - The AMI protocol version was incremented to 1.2 as a result of changing two
   instances of the Unlink event to Bridge events. This change was documented
   as part of the AMI 1.1 update, but two Unlink events were inadvertently left
   unchanged.

Module Support Level
 - All modules in the addons, apps, bridge, cdr, cel, channels, codecs,
   formats, funcs, pbx, and res have been updated to include MODULEINFO data
   that includes <support_level> tags with a value of core, extended, or deprecated.
   More information is available on the Asterisk wiki at
   https://wiki.asterisk.org/wiki/display/AST/Asterisk+Module+Support+States

   Deprecated modules are now marked to not build by default and must be explicitly
   enabled in menuselect.

chan_sip:
 - Setting of HASH(SIP_CAUSE,<slave-channel-name>) on channels is now disabled
   by default. It can be enabled using the 'storesipcause' option. This feature
   has a significant performance penalty.
 - In order to improve compliance with RFC 3261, SIP usernames are now properly
   escaped when encoding reserved characters. Prior to this change, the use of
   these characters in certain SIP settings affecting usernames could cause
   injections of these characters in their raw form into SIP headers which could
   in turn cause all sorts of nasty behaviors. All characters that are not
   alphanumeric or are not contained in the the following lists specified by
   RFC 3261 section 25.1 will be escaped as %XX when encoding a SIP username:
    * mark: "-" / "_" / "." / "!" / "~" / "*" / "'" / "(" / ")"
    * user-unreserved: "&" / "=" / "+" / "$" / "," / ";" / "?" / "/"

UDPTL:
 - The default UDPTL port range in udptl.conf.sample differed from the defaults
   in the source. If you didn't have a config file, you got 4500 to 4599. Now the
   default is 4000 to 4999.

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