Siremis v4.0.x - Setup Accounting Services

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.

Changes in file kamailio.cfg

• make sure acc is configured with MySQL support
  • in default kamailio.cfg add after the first line:

#!define WITH_MYSQL
#!define WITH_ACCDB

• set db_extra parameter (it is the same as the one in default kamailio.cfg for v4.0.x):

modparam("acc", "db_extra",
    "src_user=$fU;src_domain=$fd;src_ip=$si;"
    "dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")

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:

siremis/modules/ser/mod.install.siremis.sql

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

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.

Here are the kamailio.cfg snippets to generate and rate CDRs periodically from a running Kamailio instance.

# -- 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");
 
}