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+====== Siremis v5.3.x - Setup Accounting Services ======
+===== Accounting Panel =====
+This view maps on the records stored by Kamailio's **acc** module -- the event-based accounting, storing the START and STOP records for each call.
+You can see these records from **Accounting Services => Accounting List** and **Accounting Services => Missed Calls List**.
+===== Config file =====
+Changes in file kamailio.cfg
+  * make sure acc is configured with MySQL support
+    * in default kamailio.cfg add after the first line:
+<code>
+#!define WITH_MYSQL
+#!define WITH_ACCDB
+</code>
+  * set db_extra parameter (it is the same as the one in default kamailio.cfg for v5.1.x):
+<code>
+modparam("acc", "db_extra",
+    "src_user=$fU;src_domain=$fd;src_ip=$si;"
+    "dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")
+</code>
+===== Database =====
+Kamailio database structure and stored procedure were created by Siremis Web Installation Wizard by checking "Update SIP Database" option in Step 2. These DB operations consisted of:
+  * drop existing acc and missed_calls tables
+  * create acc and missed_calls tables with the new structure required to generate the CDRs
+  * create kamailio_cdrs() stored procedure
+  * create kamailio_rating() stored procedure
+If you want to see the SQL commands used to do above DB operations, see the file:
+<code>
+siremis/modules/ser/mod.install.siremis.sql
+</code>
+===== Generate CDRs =====
+The stored procedure for generating CDRs was created during installation process. It is named **kamailio_cdrs()**. You have to execute it periodically from a cron.d job or you can user **rtimer** and **sqlops** modules to execute it periodically from Kamailio configuration file.
+You can see CDRs in Siremis panel: **Accounting Services => CDR List**
+===== Rating CDRs =====
+The stored procedure for rating CDRs was created during installation process. It is named **kamailio_rating()**. It takes one parameter, rgroup, which corresponds to **rate_group** column in billing_rates table.
+The rules for rating the calls (billing) have to be added in table **billing_rates**. The rating engine uses the longest prefix matching to select the **rate_unit** and the **time_unit** to bill the CDRs. Each rating rule is composed from:
+  * **rate_group** - used to group the billing rules -- it has to be given as parameter to **kamailio_rating()** store procedure
+  * **prefix** - the prefix to match the **dst_user** in **cdrs** table
+  * **time_unit** - time unit in seconds to bill the cdrs
+  * **rate_unit** - the cost per **time_unit** - there is no currency associated with it, i has to be integer, so based on your needs, you can consider setting it as subdivisions (e.g., cents)
+Also, like for CDRs generation, you have to execute it periodically -- again from a cron.d job or you can user **rtimer** and **sqlops** modules to execute it periodically from Kamailio configuration file.
+===== kamailio.cfg for generating and rating CDRs =====
+Here are the kamailio.cfg snippets to generate and rate CDRs periodically from a running Kamailio instance.
+<code c>
+# -- for siremis CDRs --------------
+loadmodule "rtimer.so"
+loadmodule "sqlops.so"
+modparam("rtimer", "timer", "name=cdr;interval=300;mode=1;")
+modparam("rtimer", "exec", "timer=cdr;route=CDRS")
+modparam("sqlops", "sqlcon", "cb=>mysql://kamailio:kamailiorw@localhost/kamailio")
+# ======================================================
+# Populate CDRs Table of Siremis
+# ======================================================
+route[CDRS] {
+	sql_query("cb","call kamailio_cdrs()","rb");
+	sql_query("cb","call kamailio_rating('default')","rb");
+}
+</code>
+{{tag>siremis kamailio}}

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