3rd party software/Asterisk
Asterisk can be used as Soft Switch (among many other things). Freeside can examine recorded CDR data for subscriber billing purposes.
cdr_pgsql
Call detail records are stored by asterisk (by means of the cdr_pgsql extension) into a database of our choice. We will need to edit /etc/asterisk/cdr_pgsql.conf, add the asterisk user to postgres, add rights for asterisk to access the cdr table, and verify settings actually work.
cdr_pgsql.conf
This is our example config file. You will need to change the password to suit your install.
; Sample Asterisk config file for CDR logging to PostgresSQL [global] hostname=postgres port=5432 dbname=freeside password=FIXTHIS user=asterisk table=cdr ;SQL table where CDRs will be inserted spool=pgsql.spool
pg_hba.conf
This pg_hba.conf sample is only a snippet of the ACL to permit asterisk to connect.
- hostssl (or host)
- The connection type.
- 10.14.0.0/24
- This example is a class C subnet.
- md5
- Password authentication required
hostssl asterisk freeside 10.14.0.0/24 md5
- Check for sql access from the asterisk server
- pghostname is the postgres host where freeside is running.
pbx:~$ psql -h pghostname -U asterisk freeside
Password for user asterisk:
Welcome to psql 8.1.11, the PostgreSQL interactive terminal.
Type: \copyright for distribution terms
\h for help with SQL commands
\? for help with psql commands
\g or terminate with semicolon to execute query
\q to quit
SSL connection (cipher: DHE-RSA-AES256-SHA, bits: 256)
freeside=>
Check for storage results in the sql table.
freeside=# SELECT acctid,calldate,src,dst,duration,billsec,disposition from cdr;
acctid | calldate | src | dst | duration | billsec | disposition
--------+------------------------+------------+-------------+----------+---------+-------------
1 | 2008-02-20 15:40:00+00 | 8005551212 | 18004664411 | 19 | 0 | NO ANSWER
2 | 2008-02-20 15:48:52+00 | 8005551212 | 18004664411 | 14 | 10 | ANSWERED
(2 rows)
freeside=#
If needed, /var/log/asterisk/messages or the asterisk interactive cli will provide reporting for any errors.
Error logs here were from insufficient GRANT permissions to asterisk (as a Pg user).
Feb 20 15:37:40 ERROR[3404]: cdr_pgsql.c:159 pgsql_log: cdr_pgsql: Failed to insert call detail record into database! Feb 20 15:37:40 ERROR[3404]: cdr_pgsql.c:160 pgsql_log: cdr_pgsql: Reason: ERROR: permission denied for sequence cdr_acctid_seq Feb 20 15:37:40 ERROR[3404]: cdr_pgsql.c:161 pgsql_log: cdr_pgsql: Connection may have been lost... attempting to reconnect. Feb 20 15:37:40 ERROR[3404]: cdr_pgsql.c:164 pgsql_log: cdr_pgsql: Connection reestablished. Feb 20 15:37:40 ERROR[3404]: cdr_pgsql.c:170 pgsql_log: cdr_pgsql: HARD ERROR! Attempted reconnection failed. DROPPING CALL RECORD! Feb 20 15:37:40 ERROR[3404]: cdr_pgsql.c:171 pgsql_log: cdr_pgsql: Reason: ERROR: permission denied for sequence cdr_acctid_seq
