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--- installation_guide:asterisk:start [2016/02/05 09:15] – borja
+++ installation_guide:asterisk:start [2017/06/27 20:40] (current) – [Asterisk Global Variables] borja
@@ Line 1: / Line 1: @@
-====== Asterisk integration ======
+====== Voximal Asterisk integration ======
 ===== The Asterisk Module =====
@@ Line 42: / Line 42: @@
-==== Variables ====
+==== Configuration files ====
+Two configuration files are used :
+       * VoiceXML interpreter configuration file (to overwrite default settings)  : [[installation_guide:openvxi:start|/etc/voximald.conf]]
+       * Asterisk Application/module configuration file : [[installation_guide:configuration_file_voximal:start|/etc/asterisk/voximal.conf]]
+====  Configuration example ====
+Example:
+<code>
+; VoiceXML Configuration
+;
+[general]
+wav_codec=gsm
+videosilence=;silence
+audiosilence=;silence
+debug=4
+video=yes
+[license]
+max=100
+key=…
+[account1]
+name=Test1
+url=http://localhost/vxml/index.php
+max=1
+[account2]
+name=Test2
+url=http://localhost/vxml/demo/index.vxml
+max=3
+dialformat=SIP/%s@ovh-out
+</code>
+To assign an extension to a VXML account just follow this example, where we are assigning the previous account to three extensions number in your /etc/asterisk/extension.conf asterisk:
+<code>
+[default]
+exten => 981001001,1,Voximal(Test1)
+exten => 981001002,1,Voximal(Test2)
+exten => 981001003,1,Voximal(Test3)
+</code>
+NOTE:
+When you update your voximal.conf file, remember to refresh configuration making a command “voximal reload” in your CLI*> prompt. If you have added SIP, PRI or new extensions you must launch “sip reload”, “extensions reload”, “dialplan reload” or reload asterisk/voximal processes. Use the command “voximal show accounts” to dump your accounts.
+<code>
+CLI*> diaplan reload
+CLI*> voximal reload
+CLI*> voximal show accounts
+</code>
+Example:
+Add extensions to the Asterisk dial plan /etc/asterisk/extensions.conf, if you want to set the URL in the dialplan:
+<code>
+exten => 888,1,Answer
+exten => 888,n,Wait(3)
+exten => 888,n,Voximal(file:///root/example.vxml)
+exten => 888,n,Hangup
+</code>
+You can create and edit the file /root/example.vxml with the GNU text editor, VI, for example.
+This example will work if you have text-to-speech configured.  If not, use a pre-recorded wav or gsm file to replace the “Hello world!” text by an <audio> tag.  For more information, see the format extensions supported by Asterisk.
+<code>
+<?xml version="1.0"?>
+<vxml version = "2.0" xmlns="http://www.w3.org/2001/vxml">
+ <form>
+  <block><audio src="hello.wav"/></block>
+ </form>
+</vxml>
+</code>
+Save the file in the same directory as the VoiceXML script (relative reference in this example).
+Reload the extensions configuration with:
+<code>
+*CLI> extensions reload
+</code>
+Call the service by calling:
+<code>
+SIP:888@<your server address>
+</code>
+==== Voximal variables ====
 Variables to set before or filled after the Vxml() execution :
@@ Line 87: / Line 183: @@
   * VOXIMAL_ERROR=INTERPRETER ; Session refused, critical error with the VoiceXML browser connection.
-===== Examples =====
+==== Asterisk global variables ====
+You can set and get variable at any moment from the VoiceXML syntax using the <transfer> tag :
+** GET **
-Example use with an URL parameter:
 <code>
-[incoming]
+     <transfer name="getvar" bridge="true" dest="execute:get(ID)" />
-exten => s,1,Answer
+     <block>
-exten => s,n,Wait(3)
+       <prompt>
-exten => s,n,Voximal(http://localhost/vxml/index.vxml)
+         End of Transfer test <value expr="getvar$.value" />.
-exten => s,n,Hangup
+       </prompt>
+     </block>
 </code>
-Example to catch the Vxml() errors :
+** SET **
 <code>
-exten => _X.,1,Voximal()
+     <transfer name="toto" bridge="true" dest="execute:set(MOMO)=10">
-exten => _X.,n,NoOp(${VOXIMAL_ERROR})
+     </transfer>
-exten => _X.,n,GotoIf($["${VOXIMAL_ERROR}" == ""]?hangup)
-exten => _X.,n,Busy()
-exten => _X.,n(hangup),Hangup()
 </code>
 ===== Asterisk Online Help ======
 Online help can be accessed by typing the following command at the CLI prompt:
+<code>
 *CLI> help voximal
+</code>
 ===== CLI Management Commands ======
@@ Line 202: / Line 304: @@
 The following entries are the Asterisk CLI commands for the VoiceXML browser.
-===== Example ======
+===== Examples =====
 Add extensions to the Asterisk dial plan /etc/asterisk/extensions.conf:
+Example use with an URL parameter:
 <code>
-exten => 888,1,Answer
+[incoming]
-exten => 888,n,Wait(3)
+exten => 888,1,Answer
-exten => 888,n,Voximal(file:///root/example.vxml)
+exten => 888,n,Wait(3)
+exten => 888,n,Voximal(http://localhost/vxml/index.vxml)
 exten => 888,n,Hangup
+</code>
+Example to catch the Vxml() errors :
+<code>
+exten => _X.,1,Voximal()
+exten => _X.,n,NoOp(${VOXIMAL_ERROR})
+exten => _X.,n,GotoIf($["${VOXIMAL_ERROR}" == ""]?hangup)
+exten => _X.,n,Busy()
+exten => _X.,n(hangup),Hangup()
 </code>
@@ Line 243: / Line 357: @@
 </code>
+===== Load Balancer =====
+Example using the Dialplan and 4 different accounts (with differents ASR and TTS ressources).
+<code>
+exten => s,1,NoOp(Balancing)
+exten => s,n,Set(ACCOUNTMAX=4)
+exten => s,n,Set(TRIES=0)
+exten => s,n,Set(ACCOUNT=${RAND(1,${ACCOUNTMAX})})
+exten => s,n(retry),Set(TRIES=$[${TRIES} + 1])
+exten => s,n,Voximal(account${ACCOUNT})
+exten => s,n,ExecIf($["${VOXIMAL_ERROR}" = ""]?Goto(app-blackhole,hangup,1))
+exten => s,n,ExecIf($["${TRIES}" = "${ACCOUNTMAX}"]?Goto(app-blackhole,hangup,1))
+exten => s,n,Set(ACCOUNT=$[${ACCOUNT} + 1])
+exten => s,n,ExecIf($[${ACCOUNT} = ${ACCOUNTMAX}]?Set(ACCOUNT=1))
+exten => s,n,goto(s,retry)
+</code>
 ===== Troubleshooting (for Support) =====