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How to enable realtime voice messages in Asterisk?


This is blog is to introduce realtime voice messages in your existing Asterisk setup.

The main benefits of using realtime voice messages is as following:

  • Easy management of voice messages and voicemail greetings from centralized location i.e. database.
  • If there are multiple nodes of Asterisk serving as failing over or load balancing, then same voice messages and greetings will be available from every Asterisk node.
  • No syncing of voice messages and greetings will required for multiple Asterisk nodes.
  • Easy to remove old messages with just a single DB query.

Step # 1:

First of all enable odbc storage of voicemails from asterisk menuselect command.

# make menuselect 

Voicemail Build Options -> ODBC_Storage

# make && make install  

An asterisk service restart will be required after this change.

Step # 2:

Create following table in your MySQL database:
 CREATE TABLE `voicemessages` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`msgnum` int(11) NOT NULL DEFAULT '0',
`dir` varchar(80) DEFAULT '',
`context` varchar(80) DEFAULT '',
`macrocontext` varchar(80) DEFAULT '',
`callerid` varchar(40) DEFAULT '',
`origtime` varchar(40) DEFAULT '',
`duration` varchar(20) DEFAULT '',
`mailboxuser` varchar(80) DEFAULT '',
`mailboxcontext` varchar(80) DEFAULT '',
`recording` longblob,
`flag` varchar(128) DEFAULT '',
`msg_id` varchar(40) DEFAULT '',
KEY `uniqueid` (`uniqueid`),
KEY `msg_id` (`msg_id`),
KEY `origtime` (`origtime`)

Step # 3:

Secondly, add following DSN settings in odbc configurations (if not already added).

# /etc/odbc.ini 

Description = MySQL Asterisk Database
Driver = /usr/lib64/
Server = <hostname>
User = <username>
Password = <username>
Database = asterisk
Port = 3306
Socket = /var/lib/mysql/mysql.sock

Step # 4:

Then, add relevant settings of DSN in ODBC resource configurations of asterisk.

# /etc/asterisk/res_odbc.conf

enabled => yes
dsn => asteriskrvms
pre-connect => yes

$ asterisk -rx "module reload"

Step # 5:

Then, add relevant settings of database table configurations in voicemail.conf of asterisk.

# /etc/asterisk/voicemail.conf


$ asterisk -rx "voicemail reload"

Step # 6:

Following configurations will be required to redirect asterisk to enable logging voice messages in database.

# /etc/asterisk/extconfig.conf

voicemessages =>odbc,

$ asterisk -rx "core reload"




I like to receive and deal with challenging tasks. I am a very enthusiastic person and I think this is a strong point of mine. My friends say that I am a very funny with a good sense of humor. As soon as I meet new people who are happy to meet me, I feel extremely comfortable with them.

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